field manual 75-mm tank gun M 2 : (mounted in medium tank M 3) Permits for work in navigable waters / Corps of engineers ; Department of the army war department technical manual 2-inch mortar M3 Drill regulations for signal troops Signal book United States army 1912 training manual / united states army Basic signal communication : students manual for all arms training manual / united states army Basic signal communication : instructors guide and all arms training manual / united states army Telephone switchboard operator : students manual for all arms Signal communication for all arms training manual / united states army Message center specialist : students manual for all arms : 1923 training manual / united states army field lineman : instructors guide for all arms training manual / united states army Telegraph operator : instructors guide for all arms : 1925