TM 6-225 Field Artillery Trainer M3, 1944-11-15 CONTENTS SECTION I. GENERAL Description 1 1 Operations 2 6 Adjustment of sighting equipment and calibration 3 8 Care and maintenance 4 9 Safety precautions 5 13 II. SERVICE OF THE PIECE General 6 14 Personnel of the firing battery 7 14 Duties of personnel at the gun position 8 14 Procedure 9 14 III. PREPARATION OF TERRAIN FOR FIRING General 10 16 Gun position 11 16 Observation posts 12 16 Target area 13 17 IV. CONDUCT OF FIRE General 14 18 Preparation of data 15 18 V. SUGGESTED TRAINING USES Training uses 16 19 APPENDIX I. FIRING TABLE 22 INDEX 27, "Supersedes TM 6-225, 15 January 1941, and Training Circular no. 29, War Department, 1943.", "15 November 1944"--Title page verso, Includes index, "The field artillery trainer M3 is a unit comprised of a miniature gun mounted on a miniature carriage which carries a panoramic telescope and the necessary mechanisms for moving the carriage in deflection and in elevation ... Two distinct mechanisms, each operated in conjunction with a gunner's quadrant, are provided within the carriage for laying the gun independently for angle of site and for range (or elevation), thus giving an independent line of sighting ... The ammunition consists of compressed air as the propellent and a 1-inch commercial steel ball as the projectile."--Page 1