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 … Drill regulations for mountain artillery U.S. Army War College guide to the Battle of Gettysburg / edited by Jay Luvaas and Harold W. Nelson Firing tables : launcher, rocket, 762mm; truck-mounted, M289; firing rocket, 762mm; M31A1 and M31A1C with AK-M57 an AK-XM57E1 warhead762mm rocket, flash-smoke xm4E1