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.
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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