Reference data : (seacoast artillery and antiaircraft artillery) - USA Coast Artillery Field Manual, FM 4-155 Elementry map and aerial photography reading - USA Voorschrift, Field Manual Advanced map and aerial photograph reading - USA Voorschrift, Field Manual, 21-26 Photomail operation - USA War Department Field Manual, FM 11-150 Advanced map and aerial photograph reading - USA Basic Field Manual, FM 21-26 Antiaircraft artillery : operation of matériel and employment of personnel, antiaircraft searchlight units - USA Coast Artillery Field Manual, FM 4-115 Service of the piece : 105-MM howitzer self-propelled - USA Armored Force Field Manual, FM 17-63 Field artillery survey - USA Voorschrift, Technical Manual, 6-200 Conduct of field artillery fire using air observation - USA Voorschrift, Technical Manual, 6-210 Field artillery trainer - USA Voorschrift, Technical Manual, 6-225 Field artillery trainer, M3 - USA Voorschrift, Technical Manual, 6-225 Field artillery individual and unit training standards - USA Voorschrift, Technical Manual, 6-605