01330cam a22002651 4500 war21000061 DLC 20260227112812.0 840227s1918 dcu f000 0 eng war21000061 (OCoLC)10461535 DLC FDbER FDbER DLC UG643 .A5 1918b UG643 .A5 1918b Suppl. United States. War Department. Division of Military Aeronautics. General notions of organization and tactical suggestions indispensable to the balloon observer, issued by Division of Military Aeronautics, U.S. Army; information given by French instructors to Army Balloon School, American Expeditionary Forces. Washington, Govt. Print. Off., 1918. 22 p. ; 18 1/2 cm. Supplemented by: Supplement to the pamphlet entitled General notions of organization ... indispensable to the balloon observer... Washington, Govt. print. off., 1918. 15 p. tables. 18 cm. On title page of supplement: This Supplement is intended to supersede Part 1 of the pamphlet, which is erroneous in that it is not up to date. Balloons Tracking. Aeronautics, Military. Air warfare. Balloon observer, general notions indispensable to the. 92371 92371