Service of the piece : 155-mm gun M 1 - USA Field Artillery Field Manual, FM 6-90 Army ground forces : light aviation - USA War Department Field Manual, FM 20-100 Field service regulations : operations - USA Field Manual, FM 100-5 Service of the piece 105-mm Howitzer, M 2, truck-drawn - USA Field Artillery Field Manual, FM 6-75 Service of the piece 8-inch Howitzer M 1 - USA Field Artillery Field Manual, FM 6-91 Photomail operation - USA War Department Field Manual, FM 11-150 Advanced map and aerial photograph reading - USA Basic Field Manual, FM 21-26 Service of the piece : 105-MM howitzer self-propelled - USA Armored Force Field Manual, FM 17-63 Assault gun section and platoon - USA Armored Force Field Manual, FM 17-25 Laundries, laundry batallions, and laundry companies ; December 12, 1942 - USA Technical Manual, TM 10-350 Landing operations on hostile shores - USA Basic Field Manual, FM 31-5 (suppl.) Field Artillery : Tactical Employment - USA Field Manual, FM 6-20
