Drill and Service Regulations for Field Artillery (6-inch Howitzer) : Volume I : Parts I, II, and III Instruction for heavy artillery; prepared by a board of officers, for the use of the army of the United States with service of a gun … Instruction for field artillery, prepared by a board of artillery officers, consisting of / WM.H.French, WM. F. Barry, H.J. Hunt, to which is added The …