The organization of the French air service, with its system of airplane and seaplane squadrons, dirigibles and observation balloons, schools, repair-shops, and manufactories, is entirely an outgrowth of the war.
"Italy at War and the Allies in the West"
E. Alexander Powell
Even though the mist will be thicker over the Falls than anywhere else, there's a good possibility they may pierce it and pick us up-and then, look out for their 'planes and swift, fighting dirigibles!
"The Air Trust"
George Allan England
Airships that are used in the general army flights and maneuvers are also run under the same system as the passenger dirigibles-for a reason.
"The Secrets of the German War Office"
Dr. Armgaard Karl Graves