document / war department, office of the chief of staff Field service regulations, United States Army, 1914 / War Department, Office of the Chief of Staff 4.2 inch Mortar M2. FM 23-92 Howitzer, 105-mm, M2A1; Carriage, Howitzer, 105-mm, M2A1 and M2A2; Mount, Howitzer, 105-mm, M4 and M4A1 TF 2-508 INF Airborne OPNS SOP MFO war department field manual Camouflage of bivouacs, command posts, supply points, and medical installations Howitzer, 105-mm, M2A1; Carriage, Howitzer, 105-mm, M2A1 and M2A2 tm Instrument lights M19, M31, M34, M35, M37, M38, M47, 6578454 and 7983714, 1955 technical manual Operator's Manual (Crew) for Howitzer, Medium, Towed: 155MM, M198 (1025-01-026-6648) technical manual Direct support and general support maintenance : fighting vehicle, infantry, M2 (2350-01-048-5920) and fighting vehicle, cavalry, M3 (2350-01-049-2695), hull technical manual Operator's Manual For Howitzer, Medium, Self-Propelled: 155-MM, M109 (2350-00-440-8811) ; 155-MM, M109A1 (2350-00-485-9662) ; 155-MM, M109A3 (2350-01-031-8851)
