On War And Warfare

The Evolution and Relative Effectiveness of the Interim Brigade Combat Team

Michael K. Robel, LTC, USAR

 

Introduction

The article consists of six parts: a synopsis of the Interim Brigade Combat Team (ICBT) Mission and Organization, a historical survey of predecessors to the IBCT Brigade, a lethality comparison of various US battalions, and a wargaming section. Finally, I make some recommendations concerning the continued development and fielding of this organization.

Part 1 Brigade Organization and Mission

The brigade's mission is:

The brigade deploys very rapidly, executes early entry, and conducts effective combat operations immediately on arrival to prevent, contain, stabilize, or resolve a conflict through shaping and decisive operations. The brigade participates in major theater war (MTW), with augmentation, as a subordinate maneuver component within a division or corps, in a variety of possible roles. The brigade also participates with appropriate augmentation in stability and support operations (SASO) as an initial entry force and/or as a guarantor to provide security for stability forces by means of its extensive combat capabilities."

This brigade would likely arrive in theatre after the initial entry forces but before heavy forces arrive via maritime prepositioned ship, thus providing a significant improvement in combat power available to theater commanders in the opening stages of a campaign.

While organization and equipment are still in flux, the IBCT will be organized like current separate brigades as shown in Figure 1. It will have three motorized infantry battalions; carried in a "medium weight infantry-fighting vehicle". This vehicle will be armed with the a gun from 7.62mm to 25mm in a wheeled vehicle similar to the LAV-25 currently used by the Marines, but also comes in other variants including an Anti-tank Vehicle, Air Defense Vehicle, Mortar, command and control, logistics, and recovery variants. The vehicle must fit on a C-130. It also will have a field artillery battalion, possibly based on a wheeled vehicle, and/or a HIMARS battery. However, the significant difference between these brigades and existing ones is the armored cavalry squadron. Normally, brigades only have a cavalry troop. An anti-tank company and a engineer company round out the brigade. Like all US brigades, the IBCT would be capable of accepting other units to command such as tank battalions, additional artillery, or air defense units.

Figure 1.
Proposed Medium Brigade

Part 2 Battle Cruisers, Tank Destroyers, and Armored Cars

This section examines the evolution of the IBCT through some of its historical precedents: battle cruiser, tank destroyers, World War II Cavalry Groups of World War II, and the 2nd Armored Cavalry Regiment (Light). While there is no direct relationship between these organizations and the medium brigade, they all share features and it is instructive to look at the IBCT through historical eyes.

These seemingly disparate groups all have one thing in common: they were designed to fulfill a scouting or defense function and to allow the concentration of other forces for the main effort.

Battle Cruisers and Battle Ships

Admiral John "Jackie" Fischer invented both battle cruisers and the dreadnought or modern battleship giving the British Navy a significant advantage at the beginning of the twentieth century. The dreadnaught was a radical departure from earlier battleships because it concentrated on having a large single caliber main gun battery as opposed to several guns of mixed caliber.

The battle cruiser was designed to function independently, carried battleship armament and was faster then the battleship through increased power plants and lighter armor. Its job was to out gun, out run, and absorb hits from smaller vessels such as heavy cruisers, while evading other capital ships.

Figure 2.
USS Alaska Battle Cruiser

Tragically, the idea, which looked good on paper, did not fare so well in the real world. Germany quickly built its own battle cruisers with more armor and less speed and firepower, negating the British ships.

As a counter, the British formed their ships into squadrons and in this role; they functioned as scouts for the battle fleet. Once the enemy fleet was located, they would engage enemy battle cruisers in a fleet action or use their speed to engage the enemy battleships in conjunction with the friendly battle line.

This philosophy proved to be tragically flawed as shown at the Battle of Jutland   where no less than three out of the five British battle cruisers were sunk with catastrophic explosions and the loss all but a handful of crewman while a fourth was severely damaged. Almost as Admiral Hood, commanding the Invincible, was killed, the HMS Hood was nearing the end of its construction.

The Hood of course, suffered from the same weaknesses of all battle cruisers, and was sunk by the Prinz Eugen or Bismark in the early days of World War II.

US Tank Destroyers in World War II

Tank Destroyers (TD) are rooted to the initial use of field artillery as anti-tank guns in World War I.   The US developed TDs as a defensive measure in a very offensively minded army, perhaps dooming it to failure from the start against the rampage of the German panzers in the opening stages of World War II.

Colonel (later General) Andrew D. Bruce (who also commanded the very successful 77th Infantry Division in the Pacific) founded the US tank destroyer force. Initially, tank destroyers were to be employed in anti-tank platoons in infantry battalions, companies in infantry regiments, and independent battalions at the divisional level.   Although initially successful in wargames in the US, their combat performance never quite lived up to the "live simulations" of the pre war years.

Figure 3.
Tank Destroyer Battalion

The US planned to employ TDs offensively, for this reason, like battle cruisers, they had big guns to kill enemy tanks and were fast with only light, open topped armor to allow them to concentrate.

The 1943 Self-propelled Tank Destroyer battalion was organized as shown in Figure 3. It was armed with the M10 (Sherman based with a 3 inch gun in an open turret), the M18 (a smaller, purpose built TD, with a high velocity 76mm gun), or the M36 (another Sherman variant with a 90mm gun � essentially identical to the M26 Pershing�s). The units were not to "slug it out with enemy tanks," instead, their cavalry units would find the enemy and guide the TD�s onto the enemy flanks, while their security detachments protected them from enemy infantry.

Tank destroyer were supposed to be employed in groups and even brigades to mass and defeat large groups of enemy armor, but by the time the US entered ground combat in World War II, the Germans seldom presented such large groups of tanks. Instead, they were usually attached out to divisions in small units. In the one or two instances when large groups of enemy tanks presented themselves, the TDs were unable to concentrate due to the poor communications of the period and the time it took to assemble.

They were useful as indirect fire artillery, direct fire artillery (knocking out bunkers or AT positions in support of infantry and armor attacks), and as reinforcements to tank platoons, able to deal with the heavily armored Panther and Tiger tanks.

Mechanized Cavalry In World War II

Mechanized cavalry evolved from the Army�s horse cavalry regiments between the two world wars and during the early years of World War II. Intended as a reconnaissance and security organization, it initially relied on stealth for its success. However, early failures in North Africa showed that cavalry doctrine and organization, with few weapons and dismounts, was flawed at the start.

After its initial use in combat, mechanized cavalry evolved into a combat arm as opposed to a purely reconnaissance arm. Results were successful, but costly, because cavalry units were not equipped with the heavy armor of tank units and had far fewer scouts for dismounted work than an armored infantry battalion.

Unlike tank destroyers units, cavalry groups actually commanded their squadrons, instead of having them routinely detached out to other units. The cavalry group, however, was comparatively weak, only consisting of two squadrons. It therefore had to put all its combat power in the line or only retain a small reserve. Also unlike tank destroyers, there were divisional cavalry squadrons. As such, the role and employment of cavalry has remained fairly steady up to the present day.

The 1943 cavalry squadron was organized much like today�s cavalry squadrons, with a headquarters troop, three cavalry troops, a tank company, and a howitzer battery. The cavalry troops had three reconnaissance platoons, as shown in Figure 4. This organization was stealthy enough to gain information without fighting and heavy enough to fight to gain information.

Figure 4.
Mechanized Cavalry Squadron

Key to the tactical success of the cavalry squadron was the Jeep, small, quiet, and nimble, it could get the cavalrymen out of trouble as quickly as it got him into it. Together with the dedicated 60mm mortars and high proportion of automatic weapons, and backed up with the M-8 Armored Car (a tank destroyer cast off), supported by the tank company and the assault gun battery, the squadron could also defend and attack, as well as carry out traditional cavalry missions.

USMC Light Armored Reconnaissance Battalion

The LAR Battalion (Figure 5) arose with the USMC�s realization that they were too light for contingencies in places like the Middle East, where nearly every country had large numbers of armored vehicles.

Figure 5.
Marine Corps LAR Battalion

Although it was conceived of as a reconnaissance organization, the battalion was initially named the light armored infantry battalion. It has a similar organization to the Army�s proposed medium infantry battalions, consisting of 4 companies, each with three platoons of LAV-25, 4 LAV-Anti-tank TOW vehicles (wheeled versions of the M901 ITV), and 2 LAV-Mortar (81mm Mortars), plus assorted support vehicles. The battalion suffers from a lack of Anti-tank fires (no Javelin or Dragons) and only has four dismounts per carrier. It therefore requires augmentation from infantry, tank, and Assault Amphibian battalions for many missions. This is somewhat mitigated by the fact that it operates as part of a Marine Air-Ground Task Force (MAGTF), and as such, has an lethal air component to call upon for support.

The LAR battalion�s main roles are reconnaissance and security. Because the LAV is not armored to protect against anything larger than 7.62mm machine gun fire or 152mm artillery bursts at ranges of greater than 50 feet, it relies on its speed and stealth to avoid decisive engagement, just like battle cruisers, tank destroyers, and cavalry groups.

The LAR is at a severe disadvantage in offensive or defensive operations where the enemy has mobility equal to or greater than its own. Again, these faults are compensated for by the awesome combined arms power of the MAGTF.

LAR battalions performed well in the Gulf War, although one battalion suffered severely due to friendly fire. It has also performed well in large scale exercises in the southwestern United States.

The Light Armored Cavalry Regiment

The 2nd Armored Cavalry Regiment is the army�s "light" cavalry regiment and is descended from the 9th Infantry Division (Motorized) and the 199th Separate Infantry Brigade (Motorized) � themselves orphan�s of the high technology test bed division.

Its squadrons are organized much as a standard ACR (Figure 6), except armed with HMMWVs equipped with machine guns, automatic grenade launchers, and TOW missiles instead of fighting vehicles and main battle tanks. It has a large amount of anti-tank weapons in the form of its TOWs and Javelins, but has virtually no armor protection. The HMMWVs were intended to be surrogate vehicles for more advanced vehicles to be developed, notably the M8 Armored Gun System, but these were all cancelled, and the result is an organization with high strategic mobility, poor armor protection, that is more dependent on stealth than its heavier brother.

Figure 6.
 2nd ACR

The 2nd ACR could be characterized as a combination and evolution of World War II Tank Destroyer units (with its heavy hitting TOWs instead of tank destroyers) and the mechanized cavalry groups (with their HMMWVs instead of jeeps.)

The 2nd ACR has not been tested in combat, but has faired well in peacekeeping operations; however, it has not proved as successful as its heavy counterparts at the National Training Center. It is more fit for low intensity warfare and peacekeeping than high or medium intensity combat.

Historical Lessons Learned

  • Speed, stealth, and firepower are no substitute for protection
  • If it looks like a tank (battleship), it will get used like a tank (battleship).
  • Dismounted scouts or infantry are necessary for successful combat / reconnaissance operations.
  • If there is flawed doctrine, the troops will invent their own ways of employing a system.
  • Surrogate vehicles tend to become permanent.

Part 3 The Medium Battalion

Examination of the medium battalion (Figure 7) does not show any revolutionary concepts. It is organized in the triangular pattern of most US Army organizations since World War II, but it does have a departure in that the companies have a fourth platoon, a trait usually found only in US Armored Cavalry Units.

As we have seen from our historical trait, its probable use of wheeled vehicles is not historically unique in the US Army. Many other armies, notably the Russian and French, use a combination of wheel and tracked combat vehicles.

This organization is designed to prevail through dismounted infantry assault instead of mounted combat.   To accomplish this it has 8 � 10 dismounts per carrier instead of the four of the Marine�s LAR battalion. This requires a larger vehicle than the LAV-25 such as the LAV III+1 or a variant of the LAV-Logistics vehicle mounting only a M240, M2, or MK-19 machine gun on a skate mount. Instead of the LARs AT vehicles, it probably will use LAV-Assault Gun vehicles with a 105mm cannon.

There is significant debate over the "worthiness" of wheels versus tracks. Wheels are supposed to be more maintainable, faster in some circumstances, more strategically mobile. They can carry armament sufficient to knock out main battle tanks at the cost of armor protection � a trait shared with battle cruisers and tank destroyers. Tracked vehicles have better off road mobility and are generally considered more robust.

Figure 7.
Proposed Medium Battalion

For anti-tank fires, the battalion has 45 Javelins but no TOWs. Unfortunately, Javelins have a range of only 2000 - 2500 meters and most OPFOR ATGMs out range them. The brigade AT company will provide long range fires, probably initially with 12 LAV-AT type vehicles with TOW missiles. Perhaps later, the Line of Sight Anti-Tank or FOG-M systems will take the TOW�s place. Many OPFOR ATGMs also outrange the TOW with its 3,750-meter reach. This lack of range could leave the battalion and its companies at a severe disadvantage when faced with Former Soviet Union equipment equipped with long range AT missiles.

Each company probably will have two 120mm LAV mounted mortars, with four more at battalion for a total of ten mortars.    A tracked version of this force is also under consideration, centering on the M113 and the M8 Armored Gun System. It is also possible that it will have a mix of wheels and tracks.

New doctrine will have to be invented to provide this organization a method to fight. Its four-platoon organization will be new to anyone except armored cavalry troop commanders. As such, it will require some learning and experimentation to find the best way to employ it and this is being done by the heavy use of JANUS at Fort Knox and Fort Benning.

Even though this unit is not supposed to stand and slug it out with heavy armored forces, we can imagine many situations where it may have to. Since it will likely be the first unit to arrive behind the assault forces of the 82nd Airborne Division or the US Marines, it may well be called upon to do so as we can no longer expect an enemy to sit idly by while we leisurely expand beach or air heads.

Observations

This organization shares many of the characteristics of its predecessors in that it:

  • Seeks to substitute speed and stealth for armor.
  • Lacks long-range anti-tank fires.
  • Has systems that may well be regarded as tanks (the LAV-AG or AGS) when tanks are not available.
  • Will more than likely have to fight against enemy forces it was not designed to (the T-80/BMP combination) instead of a lower tech unit such as the T-55/BTR combination.

On the positive side:

  • In a rush to get fielded, is adopting off the shelf vehicles after a "shoot out" instead of planning on new acquisition.
  • Doctrine is being developed, in conjunction with existing weapon systems, to provide a fightable organization from the start.
  • Simulations are being used to develop tactics, tips, and procedures for its employment.
  • Has a large dismounted infantry component, which delivers a high volume of general purpose and anti-tank fires in the 0 to 2,000 meter range band.
  • Its large infantry component corrects weaknesses of the Bradley and LAR battalions.

Part 4 Comparative Lethality

This portion compares the lethality values of various current and proposed organizations using lethality values from TACOPS[2]. The organizations compared are:

  • Mechanized Infantry Task Force with 2 Mech and 1 Tank Companies.
  • Mechanized Infantry Task Force with 3 Mech and 1 Tank Companies.
  • Balanced Infantry Task Force with 2 Mech and 2 Tank Companies.
  • Medium Infantry Battalion with 3 Medium Infantry Companies using the LAV III+[1].
  • USMC Light Armored Reconnaissance Battalions with 4 LAR Companies.
  • Medium Infantry Battalion with 3 Medium Infantry Company using the M113and AGS.

These battalions rate in comparative lethality (as compared to the Mech-heavy task force of 2 mech companies and 1 tank company) as shown in Figure 8:

Organization Lethality Lethality Ratio
USMC LAI BN 5198 0.84
MECH BN TF (2M/1T) 6171 1.00
USA MED BN 7357 1.19
M8/M113 7471 1.21
Balanced TF (2M/2T) 7671 1.24

MECH BN TF (3M,1T) 7904 1.28

Figure 8.
Comparative Lethality and Force Ratio

The lethality index is graphically portrayed in Figure 9 and the weapon system strength is shown in Figure 10.

The Mech Heavy TF (ratio 1.0) is the study baseline because it is the objective organization for US Army heavy units in the near future. (Some units have already begun to convert.) It is based on the premise that digital C4I systems will provide a combat multiplier equal to or greater than the lost combat power represented by the fourth company. The Mech Heavy TF, with three company teams, has extensive long-range killing power, centered on its tanks and infantry fighting vehicles, but lacks the close in killing power of the Medium Infantry.

The USMC LAI Battalion has relatively little combat power when compared to the other forces due to the lack of dismounted ATGMs and small dismounted infantry element.

The medium battalion�s high lethality rating is due to the high number of Javelins, large number of dismounts, the organic assault gun platoon, and the ten 120mm mortars in the battalion. This organization, while it only has three companies is, due to its four platoon structure, essentially a four company unit. The medium battalion could reasonably expect to include 4 LAV-AT systems, which increase its lethality, but is not included in its totals here.

The Medium Battalions converted to the M113 and the M8 AGS is slightly more powerful than the LAV based Medium Infantry Battalion. While there is a significant lethality difference between the .50 caliber machine gun and the 25mm cannon, this seems to be offset by the improved mobility of the tracked vehicles and increased armor protection and lethality of the AGS when compared to the LAV-AG. Otherwise, these two battalions are structured the same.

The four-company heavy task force is more lethal than the medium battalion due to a greater number of tanks and TOW missiles, as well as armor protection of the vehicles. The balanced TF (2 tank and 2 mech companies) was, in the author�s experience, the favored task organization in heavy divisions for battalion task forces. It provided a reasonable balance between tank heavy killing power and infantry dismounts.

Observations

  • The Medium battalion may suffer from a lack of long-range anti-tank fires, due to the Javelin�s 2,000 range. It is uncertain if the LAV-AG and any attached LAV-AT will offset this possible deficiency.
  • The medium battalion needs to make greater use of stealth, terrain, and engineer work to offset its lower protective value when compared to a heavy TF, especially in the defense.
  • In close combat, its greater dismount strength and larger number of close range anti-tank systems may make it more lethal than the heavy task force.

Figure 9.
Comparative Lethality

 

Figure 10.
Weapon Systems

 

Part 5 Gaming it out

In order to evaluate the effectiveness of this organization, TACOPS 3.0 was used to compare and contrast the Medium Battalions with a three-company team mechanized infantry task force in various scenarios. Different organizational variations were also considered. Brigade Combat Team[3] was also used to supplement this work.

The enemy in each case used the BTR-80 and T-80 based on organizations found in FM 100-60 Armor and Mechanized-Based Opposing Force Organization Guide. [4] Each test was run five times.

Offensive Scenario Development

The first test was an offensive scenario with the two US variants pitted against a dug in BTR-80 Company reinforced with a T-80 platoon. Unlike the other simulation runs (discussed later), in this case, the enemy had to be totally destroyed to end the scenario.

The attack was conducted as shown in Figure 11. A supporting attack was made in the north with one company to seize the support by fire positions, while the main attack, with two companies, was in the south.

The lead company in the south seized OBJ 1, overwatched by the northern company. Once OBJ 1 is secured, the trailing southern company passes through it and takes OBJ 2, and the process is repeated for OBJ 3. Once OBJ 3 is seized, either the northern company can seize OBJ 4 or the company on OBJ 3 can do so.

In both cases, the US force successfully attacked and destroyed the enemy unit in less than an hour. The conventional M2/M1 TF reduced the enemy strength much more quickly initially, but needed a little longer to dig the OPFOR out of their holes than the Medium Battalion. Both battalions finished at about the same percent strength (87 for the medium versus 93 for the Mech) and both units could have been probably withstood a counterattack or continued the attack to subsequent objectives.

Figure 12 and 13 shows how these organizations compared with each other in terms of combat power over the course of the game.

Figure 11.
Offensive Plan of Attack

 

 

Figure 12.
 Offensive Strength over time

 

 Figure 13.
Offensive Lethality Over Time

 

Defensive Scenario Development

Next a defensive scenario was run where the two organizations defended against an OPFOR Motorized Infantry Brigade, again organized per FM 100-60. Defensive scenarios were conceived as if the medium battalion was protecting an airhead or beachhead while other elements deployed or arrived. I sought to defeat the enemy attack on the battalion�s initial positions, although there was some maneuver in each company.

The US defensive plan is shown in Figure 14.

Again, the general pattern of the two scenarios was about the same. The US force won in about an hour. The medium battalion fared better than the mech battalion, ending at 59% strength versus 48% strength. (Figure 15 and Figure 16)   In defensive scenarios, the simulation ended when the enemy strength was reduced to 60% or the friendly strength to 50%.

While the enemy penetrated the mech defense further than the medium version, at no time was the US sector in danger of being penetrated through the rear boundary. Critical to success of the medium battalion was its 10 mortars to smoke friendly positions to shield them from enemy fires. Because of the long-range fires of the M1�s, this was not quite so necessary with the Mech TF.

While the first echelon was destroyed pretty handily, neither organization was well suited to deal with the follow on attack by the BMP and Tank Regiment of the OPFOR division, as can be seen by the end state shown in Figure 17.

Figure 14.
Defensive Plan

 

Figure 15.
Defensive Strength Over Time

 

Figure 16.
Defensive Strength Over Time

 

Figure 17.
Defensive End State

 

Engineer Support for the Medium Brigade

The Medium Brigade has only an Engineer Company for mobility, counter-mobility, and survivability support. Reports indicate that this company will be more focused on improving mobility for the Medium Brigade instead of counter-mobility or survivability. This is perhaps more in tune with the role of the brigade in Stability and Support Operations (SASO) and Military Operations in Urbanized Terrain (MOUT). In a standard defensive mission, this would seem to be a weakness.

In the scenarios run without engineer units, defending units were placed in defilade to reduce their vulnerability to direct fire. In the others, each unit was entrenched.

The recon/counter-recon phases saw the scout platoons stripping off the enemy recon elements though casualties were usually heavy.

TACOPS provided 3 155 batteries, an MLRS battalion, and several air sorties in support of the Medium battalion while BCT provided 3 155 batteries and 4 A-10 sorties. All Fire Support assets were used in TACOPS while in BCT, the air sorties were not used. Neither scenario provided for PGM attacks and only HE and Smoke were available for the 120mm Mortars.

Without engineers using TACOPS, the BLUEFOR won each time, with an average ending strength (of all unit types) of 50% and an average OPFOR strength of 37%. When using BCT, the BLUEFOR also won each time, with an average ending strength of 81% and OPFOR strength of 16%.   With engineers, using TACOPs scenarios, the average BLUE end strength was 59% and OPFOR was 36%. With BCT, BLUE strength was 89% and OPFOR strength was 23%.

Note the increase in survivability for BLUE was about 10%. This difference may be significant in defending against a follow on force. The difference in BCT OPFOR strength is attributed to the improper placement of the minefield in such a manner that the BLUE force could not range most of it.

In both games, casualties were higher when shifting battle positions or counterattacking by fire was attempted, highlighting the difficulty of knowing when to start the movement of friendly forces to subsequent positions.

LAV or AGS for the Medium Brigade?

While the popular attention is fixed on the possibility of wheeled combat vehicles for the Army�s new medium brigades, tracked vehicles, such as the venerable M113 and the M8 Armored Gun System are also in competition.

Adopting the M113 and AGS would have some advantages in that the Army has lots of M113s still in use and many spare parts for them. The M8 was type classified and ready for production when it was cancelled and so is not readily available. The main disadvantage of these two vehicles is they do not have common repair parts; something that hopefully buying a system of wheeled vehicles would provide. Recent developments in the evaluation process indicate that a mixture of tracks and wheels may be acceptable or another series of vehicles, not necessarily of the same family.

Vehicle Comparison

At first glance, from a comparison of TACOPS vehicle characteristics, the observer would expect these two organizations to perform pretty much the same.

Table 1. Vehicle Armor

Vehicle Front Armor Side Armor Rear Armor
M113 20 16 16
LAV III ISC (+) 60 40 35
AGS Level II Armor (KE) 90 50 40
LAV-AG[5] 30 22 7
M2A2 40 30 20
BTR-80 20 7 5

 

Table 2. Weapon Lethality

Weapon / Range 0 Meters 1250 2500 3000
M2 .50 cal

.95 / 30mm [6]

.60 / 23mm

.10 / 35mm

XXX
25mm

.95 / 70mm

.50 / 55mm (1500m) .2 / 45mm .05 / 40mm
TOW .60 / 1400mm .90 / 1400 mm (1500 m) .90 / 1400mm .90 / 1400mm
105mm[7]

.90 / 590 mm .8 / 575mm (1500mm) .50 /540mm .15 / 520mm
14.5mm MG .95 / 35mm .66 / 20mm .1 / 10mm XXX

As can be seen, the LAV III is both better protected and more lethal than the M113 while the M8 Level II is much better armored and armed than the LAV-AG. It is the M8�s armor and reach that makes the M8/M113 battalion more lethal.

Organizational Comparison

To continue to evaluate engineer issues, the scenario was played out in hasty and deliberate defense. Except for substituting M113 variants and M8s for the different LAV variants, the two organizations were structured the same. The OPFOR was a BTR-80/T-80 Regiment.

Without engineer support, the M113/AGS organization did rather poorly. Its lethality, on average was diminished to an average of 3828 (47.6%) out of 8027, with its high being 3999 (49.8%) and its low being 3897 (48.5%). On average it had 88 (48.3%) systems left out of 152, its high being 96 (52%), and its low being 73 (40.1%). It reduced the OPFOR to an average lethality score of 9896.4 (46.4%) out of 21298 and reduced the total weapons systems to an average of 142 out of 344 (41.3%).

When dug in, the battalion�s performance was much better. Average lethality at the end was 4932 (61.5%), with a high of 6208 (72%) and a low of 3895 (48.5%), while reducing the OPFOR to an average of 9135 (42.8).

These results compare to an average LAV lethality value (without engineer support) of 4094 out of 8027 (51%) and ending OPFOR strength of 9330 out of 21298 (43%). With Engineer support, the LAVs ended at an average of 4639 out of 8027 (57%) and the OPFOR at 7687 / 21298 (36%). (Figures 18and 19)

Figure 18.
AGS BLUFOR Lethality

 

Figure 19.
AGS OPFOR Lethality versus Blue Organization

 

Battle Taxi�s or Fighting Vehicles?

Much attention has also been fixed on examining the performance of the Medium Brigade based on LAV-25 vehicles. However, the mission of the Brigade revolves heavily on dismounted assault and the infantry school may have a preference for using the logistics carrier equipped with the M240 7.62mm Machine Gun, M2 HB .50 caliber machine gun, or theMK-19 Automatic Grenade Launcher instead of the LAV-25 in order to carry more dismounts. This would be a return to the "battle taxi" concept of infantry, which the US Army used when heavy units were based on the M60/M113 series of vehicles.

This portion studies how a LAV-LOG based battalion compares to a LAV-25 battalion. The OPFOR, as for the other tests, was a BTR-80/T-80 regiment without thermal sights.

Organizational Comparison

Just as for the previous tests, two scenarios were used: One in which the TF was dug in and one in which it was not. Organizationally, the TACOPS lethality values for the LAV-25 Battalion is 8027 and the LAV-LOG Battalion is 7782.

The difference between the two organizations is, of course, the lack of the 25mm gun on the LAV-L [8] carrier. This difference removes much of the ability of the battalion to fight at long range. The entire killing power of the organization beyond 1,000 meters is dependent upon the Javelin AT missile and the LAV-AG. My expectation was that this organization would do much worse in combat when compared to a LAV-25 based battalion.

Theoretically, the LAV-L organization is capable of destroying a BTR-80 regiment, as shown below:

# Javelins � 45 * 4 rounds = 180 shots

TACOPS Ph = .9

TACOPS Pk = .9[9]

Theoretical Vehicles killed � 180 * .9 * .9 = 145

# LAV � AGS � 12 * 20 rounds = 240 shots

Tacops Ph (105mm @ 1500m) = .5

Tacops Pk = .6

Theoretical Vehicles Killed � 240 * .5 * .5 = 60

Total Kills � 205

Number Fighting vehicles in BTR-80 Regiment = 187.

Of course, this assumes a flat surface, perfect shooting, no supporting weapons, and no friendly losses. Still, it shows that the battalion should be able to defeat a BTR-80 based regiment.

Without engineer support, the LAV-LOG based organization did rather poorly. Its lethality, on average was diminished to an average of 3914 (51%) out of 7622, with its high being 4844 and its low being 3575. It reduced the OPFOR to an average lethality score of 11070 (51%) out of 21298.

 

Figure 20.
Lethality without Engineer Support

 

When dug in, the battalion�s performance was much better. Average lethality at the end was 4459 (57), with a high of 5659 (72%) and a low of 3667 (47%), while reducing the OPFOR to an average of 9037 (42%).

Figure 21.
Lethality with Engineer Support

 

These results compare to an average LAV lethality value (without engineer support) of 4094 out of 8027 (51%) and reduced the OPFOR to 9330 out of 21298 (43%). With Engineer support, the LAVs ended at an average of 4639 out of 8027 (57%) and reduced the OPFOR to 7687 / 21298 (36%) as shown in earlier sections of this study.

The difference in values when compared to the LAV-25 battalion is probably due to my increasing ability to initially deploy the battalion (although all deployments were fairly similarly) judge the best time to begin displacement of the force, and better use of artillery.

Without the 25mm cannons, units ran out of Javelins much faster. LAV-AG losses were high because I displaced them last when moving to subsequent battle positions. I found that the best time to begin moving to subsequent positions is when the enemy is at about the 2000-meter line. This of course negates the Javelin. If minefields do not delay the enemy, then displacement is a very near thing and minimizes the contribution of dismounted infantry in the delay or mobile defense.

Part 6 Observations and Recommendations

As expected, principles for a lightly armored wheeled force are the same as for a heavier tracked force, but their employment is different. Lessons learned included:

Lessons Learned

On average, the LAV battalion faired better than an M113/M8 force in terms of survivability and in inflicting casualties on the attacking OPFOR force. I attribute this to the overall better armor of the LAV force, together with the lethality of the 25mm cannon when compared to the .50 caliber machine gun of the M113.

The M113/AGS force is more vulnerable to artillery fire than the LAV force. Both are more vulnerable to indirect fires than a heavy task force.

The US needs a longer range ATGM and/or a countermeasure device to balance out the long-range fires of the OPFOR ATGMS. The AT-6 and AT-10s outrange the TOW and the M1A2 by at least 1,000 meters.

Engineer support made about a 7 � 10 % difference in the survivability of the organization when defending.

The large amount of mortars is a plus, enabling a massive amount of indirect fire on the enemy. (120mm PGM ammunition will make them more lethal still.)

The best use of smoke is to smoke friendly positions to defeat the acquisition of my units by the enemy. Of course, if the enemy has thermals then this will have less effect.

In an age where our casualty tolerance is very low, it appears that a force that relies on close in combat action to achieve decisive results is not the best course of action. The force should have sufficient long-range weapons to destroy and suppress the enemy before the enemy closes to 1,000 meters.

The attacking medium force must make shorter bounds then a heavy task force. It is more similar to an air assault battalion than it is to a mechanized infantry task force.

Massive overwatch fires are necessary (sometimes I would have as many as seven platoons over watching the move of a single platoon). Infantry and Javelins must be deployed whenever the carriers halt.

The medium Scout Platoon is more lethal than the heavy TF Scout Platoon, but the temptation to use it to fight is much greater, since they are not in HMMWVs.

Even more than the heavy force, finding or creating a flank is a necessity. The lighter vehicles are much more vulnerable on the flanks than is a heavy force, making being caught in a fire sack or against a mine field a real trap.

Recommendations

Each battalion should have an anti-tank platoon of 4 � 6 LAV-ATs for long-range fire support, then the brigade AT company could be used as a reserve and its fires concentrated.

Provide an engineer battalion as the minimum size engineer force for the medium brigade, ensuring it has a mix of mobility, counter-mobility, and survivability equipment.

Each battalion should field a platoon of LAV-AD for short-range air defense.

To reduce vulnerability to artillery, one vehicle per platoon should be equipped with the AN/VLQ-9/10 Shortstop Electronic Protection System (SEPS) designed to counter artillery and mortar proximity fuses. A similar device should be developed to counter ATGM�s.

To reduce vulnerability to enemy air, the battalion should have an Air Defense Platoon based on the LAV-AD.

Do not adopt as the primary combat vehicle of the battalion the LAV-APC armed with a small caliber weapon. The primary combat vehicle of the battalion should carry a 25mm or 30mm cannon in order to provide sufficient support to the dismounted infantry force and kill the enemy�s supporting vehicles before they close to within 1,000 meters.

Some Other Thoughts

As we adopt the LAV organization, it will provide a distinctive footprint on the battlefield, giving the enemy a vital clue about what type organization he is fighting. WE should convert most, if not all, reconnaissance organizations to the Medium Battalion Organization to deny the enemy knowledge of what type organization he is fighting. Behind its reconnaissance screen, our force could be airborne, air mobile, light, mechanized, or medium infantry and the enemy would not know for sure until he was in the main battle area. Specifically, we should consider some of the following options:

Convert all battalion and brigade scout platoons to LAV-25 fighting vehicles. This would standardize training for scouts and provide more firepower to the battalion. With the reduction in maneuver companies from four to three, this would give the scout platoon more capability in the counter-reconnaissance fight.

Convert the divisional armored cavalry troops to LAV-25s. This would again provide the armor force some measure of standardization in training across the force as well as significantly increase the combat power of these organizations.

Convert the 2nd ACR to a LAV-25/LAV-AG structure as soon as possible. It should be third in priority to the IBCTs and would again improve training across the armored force and provide increased combat power to the corps commanders.

A Name

I propose this organization be called Dragoons. Historically, dragoons were mounted infantry, using their horses to get to the battle and then dismounting for combat. Much of the strength of this organization, regardless of what combat vehicle is selected, will be in its infantry and this name will give them a heritage and name that emphasizes their importance.

Bibliography

Armor in World War II: American Armored Doctrine, http://www.geocities.com/CapitalHill/Congress/1418/armor4.htm

Bernstein, Lewis, Army Experimental Formations and their possible influence on the Establishment of the Force XXI Experimental Force, Center for Army Lessons Learned, Fort Leavenworth, KS October, 1996.

Demarco, Lou, Mechanized Cavalry Doctrine In World War II, http://www.geocities.com/Pentagon/Quarters/9517/page65.html

Gable, Christopher R, Leavenworth Papers Number 12: Seek, Strike, and Destroy: US Army Tank Destroy Doctrine in World War II, Combat Studies Institute, US Army Command and General Staff College, Fort Leavenworth, KS, September 1985.

Gordon, John IV, and Wilson, Peter A., The Case for Army XXI "Medium Weight" Aero-motorized Divisions, a Pathway to the Army of 2020, Strategic Studies Institute, US Army War College, Carlisle, PA. May 1988.

HMS Hood Association, Origins of the Royal Navy Battle Cruiser, http://www.geocities.com/SoHo/Workshop/2966/history/BCorigins.html

Riggs, Scott, Strike Force: An Independent Proposal, (Personally published by Major Riggs and provided to the author.)

US Army Armor Center, Brigade Combat Team Website, http://knox-www.army.mil/center/mwfi/index.htm

Program Manager, Light Armored Vehicles, http://www.tacom.army.mil/LAV/

PM, Firefinder Shortstop Electronic Protection System (SEPS), http://www.monmouth.army.mil/prjbk97/pmfiref/17-9.html

USMC, MCWP 3-14 (Coordinating Draft), Employment of the Light Armored Reconnaissance Battalion, Department of the Navy, Washington, D.C., January, 2000.

About the Author

Mike Robel is a lieutenant colonel in the Army Reserve, with 16 years of active duty as an Armor Officer. He served in the 11th Armored Cavalry Regiment as a tank and cavalry platoon leader and a cavalry troop executive officer patrolling the very edge of the Free World along the border between East and West Germany. His other service was in the 1st Infantry Division (Mechanized) {The Big Red One} in Fort Riley, Stuttgart, Germany, and the Persian Gulf, where he commanded companies in all three brigades of the division and served as a battalion maintenance officer, battalion supply officer, battalion assistant operations officer, division armor training officer, division assistant operations officer, and as a brigade supply officer.

After leaving active duty, he worked for Logicon Advanced Technology as a database manager for the 87th Exercise Division in Birmingham, AL and managed the 2nd ACR�s simulation center in Fort Polk, LA, where he used the Army�s Corps Battle Simulation, Battalion-Brigade Battle Simulation, and JANUS. He is now a Knowledge Acquisition and System Test Engineer working on WARSIM 2000, which is the Army�s next generation battle simulation.

He has played board wargames since he was 8 years old (Avalon Hill�s U-Boat), and computer wargames since Avalon Hill�s MIDWAY for the TRS-80 Computer. He worked for Intracorp/360 for a year as the 360 Product Manager and was involved in the final production of HARPOON 2 (ADMIRAL'S EDITION). He has play-tested and developed scenarios for a plethora of wargames including HARPOON CLASSIC, HARPOON II, V FOR VICTORY, STEEL PANTHERS, GREAT NAVAL BATTLES, ULTIMATE MILITARY SIMULATOR II, PATRIOT, TANKS, and HIGH COMMAND as well as Army simulations.

He has been published in a variety of publications including STRATEGY PLUS, www.cdmag.com, COMMAND Magazine, Armor, Infantry, Military Review, and Army Times on a variety of computer games and various historical and contemporary military and historical topics as well as a strategy guide for TANKS!

He now lives on Merritt Island, Florida where he has a front row seat for space shuttle launches and the beach.


Endnotes

[1] The LAV III+ is larger than the Marines LAV-25 at the cost of amphibious capability but it has heavier armor than the M2 Bradley.

[2] TACOPS is a commercial wargame developed by a retired Marine Officer. It assigns lethality values to each weapon.

[3] BCT is similar to JANUS is look and feel, thought it is a wholly commercial product.

[4] A BTR-80/T-80 organization was used as the basis for this evaluation because the author felt if the medium weight battalion could stand up to it, it would have no problem with other less capable threats.

[5] In TACOPS, there is no LAV-III AG combination. It can be assumed that should the US Army buy the LAV III, an Assault Gun version would have equal armor to the infantry support carrier.

[6] Probability of hit at the given range / armor penetration at the given range.

[7] While the AGS and the LAV-AG both have a 105mm gun, in TACOPS, the LAV-AG only has a 2500-meter range while the M8 has a 3000-meter range. This difference is probably due to fire control.

[8] In TACOPS, the only weapon possible is the 7.62mm Machine Gun.

[9] The Pk is a rough estimate from the armor penetration ability of the weapon against the armor rating of vehicles in the scenario.

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