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.
"The purpose of this 1944 manual is to provide field artillery personnel with basic principles of maintenance and inspection of radio sets and to provide field artillery radio repairmen with fundamental techniques and procedures necessary to...
"Wire is one of the principal means of communication for all field artillery except mechanized and antitank artillery. It consists of telephone or telegraph communication. All other means augment and supplement wire."
"This manual presents the details of construction, use, and maintenance of land sites for low altitude barrage balloons. Rigging of the bed is described for securing low-altitude barrage balloons by bedding down, tail-line mooring, mooring-cirlce...