Service of the piece 8-inch Howitzer M 1 - USA Field Artillery Field Manual, FM 6-91 Field artillery : tactics and technique of division artillery and higher artillery echelons - USA War Department Field Manual, FM 6-100 Photomail operation - USA War Department Field Manual, FM 11-150 Advanced map and aerial photograph reading - USA Basic Field Manual, FM 21-26 Examination for gunners - USA Antiaircraft Artillery Field Manual, FM 4-119 Service of the piece : 105-MM howitzer self-propelled - USA Armored Force Field Manual, FM 17-63 Laundries, laundry batallions, and laundry companies ; December 12, 1942 - USA Technical Manual, TM 10-350 Quartermaster service in theater of operations - USA Field Manual, FM 10-10 Handbook on German Military Forces - USA Technical Manual, TM-E 30-451 Landing operations on hostile shores - USA Basic Field Manual, FM 31-5 (suppl.) Field Artillery : Tactical Employment - USA Field Manual, FM 6-20 Field artillery : Gunnery - USA Field Manual, FM 6-40