FIELD ARTILLERY FIELD MANUALS FM 6-5 Organization and Drill 1939 FM 6-20 Tactical Employment 1944 FM 6-20 Tactics and Technique 1941 FM 6-40 Field_Artillery Firing 1939 FM 6-40 Field Artillery Gunnery 1945 FM 6-50 Service of the Piece 75-mm Gun, M1897 and M1897A4, Horse-drawn and Truck-drawn 1939 FM 6-55 Service of the Piece 75-mm Gun, M2, Horse-drawn and Truck-drawn 1939 FM 6-70 Service of the Piece 75-mm Howitzer, Horse and Truck-drawn 1939 FM_6-75 Service of the Piece 105-mm Howitzer M2, Truck-drawn 1941 FM 6-150 Organic Field Artillery Air Observation 1944
