field manual Heavy weapons company, rifle regiment / [War Department] field manual Service company and medical detachment (supply and evacuation) infantry regiment / [War Department] field manual Defense against chemical attack field manual Tank gunnery field manual Field service regulations : operations / prepared under direction of the chief of staff Manual of field artillery exercises horse guards, 1st august 1861 List of war department films, film strips, and recognition film slides, April 1945 - USA War Department Field Manual, FM 21-7 4.2 inch Mortar M2. FM 23-92 Field Artillery. Tactics and Technique. FM 6-20 field manual Field artillery tactics war department field manual Camouflage of bivouacs, command posts, supply points, and medical installations