These instructions are published for information and guidance of personnel responsible for organizational maintenance of the computer, gun direction M18.
PM 4-175, Coast Artillery Field Manual, Antiaircraft Artillery Operation of Materiel and Employment of Personnel, Searchlight Units, is published for the information and guidance of all concerned.
These 1925 regulations contain information pertaining to the analysis of drill and target practice, rules governing the conduct of all Coast Artillery Corps target pracctice . . .