United States. Army Division of Military Aeronautics · leaf 389
FIELD SERVICE MANUAL FOR BALLOON COMPANIES. 19 service has in this system two lines for the balloons to the artillery and one for the balloons to the commanding officer. So far as possible, each balloon is connected to a minimum of two centrals. 4. Double lines are provided in the artillery system… … Special System AND Emergency System Telephone Wa^on or Booth Hi^h T>owered heavy arfilfery ~A. L . V.F. Heavy railroad art y Windlass Q ~ Reserve Group Trench Artillery ADpDe AD, Field Artillery 5. A double line is run between the Air Service Centrals of adjoining sectors (for combined regulation…
Balloons · Aeronautics, Military
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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