Tactics instruction memorandum : Local security and defense of field artillery Materiel instruction memorandum : Instructions for Semi-Annual (6,000 Mile) Maintenance Service Gunnery instruction memorandum : Technique of Fire Direction Materiel instruction memorandum : Maintenance of Field Artillery Materiel Tactics instruction memorandum : Field artillery observation Materiel instruction memorandum : The Firing Battery 75mm Pack Howitzer, M-1 Materiel instruction memorandum : The Firing Battery 155mm Gun M1 Elementary combat intelligence Offices candidates' school : Course of Instruction in U.S. carbine, cal .30, M1 Offices candidates' school : Course of Instruction in U.S. rifle, cal .30, M1 Bulletin of information for officers reporting for duty at marine barracks Quantica, Virginia Materiel instruction memorandum : Fuzes and Boosters