EM 17-69 c i ARMORED COMMAND FIELD MANUAL CREW DRILL, SERVICE OF THE PIECE, AND GUNNERY (75-MM ASSAULT HOWITZER ON MOTOR CABBIAGE, MS) CHARGES'! WAR DEPAKTMENT, No. 1 WASHINGTON 25, D. C., 31 May 1944. FM 17-69, 30 November 1943, is changed as follows : • 98. METHODS or INDIRECT Fire. c. (Added.) It is generally not desirable to lay an individual howitzer when the piece is not visible from the OP. However, the platoon may be laid to fire from a position not visible from the OP by use of the aiming circle and compass, or by the compass alone. (1) By means of a compass, the observer measures the mag netic azimuth of the target from the OP. The target offset (angle T, fig. 36 and par. 99) is applied to this azimuth to determine the azimuth of the howitzer-target line, and the result is communicated to the howitzer position.
DesignationFM 17-69
EditionJan 1943
StatusSuperseded
FunctionSmall Unit Tactics
CollectionHistoric