Fm 4 15 Coast Artillery Field Manual Seacoast Artillery Fire Control And Position Finding 1943

"The purpose of this manual is to provide a guide for the technical training of the personnel employed in the determination and application of firing data for seacoast artillery. This manual, on the principles of fire control and position finding, includes the design and operation of all instruments and devices used by position finding and gun pointing details, and the functioning of these details as a whole. The contents of the manual apply to both fixed and mobile seacoast artillery."