The U.S. Army has decided that smart bombs and smart shells make a lot of its artillery units unnecessary. So two thirds of its non-divisional (those that that are not part of a combat division) artillery battalions will be converted to other uses (engineers, military police and civil affairs.) That's 36 artillery battalions containing nearly 10,000 troops. Most of these are National Guard units, who report to state governors, unless they are called up by the federal government. The governors won't mind having fewer artillery, and more engineer, military police and civil affairs battalions, as these units are more useful for the natural disasters the governors usually call upon National Guard units to help out with.