Home War Diary of Gen Frank P. Lahm – US Air Service World War One (Part One) An observation balloon ready to ascend over Ypres, France, 31 Oct 1917

An observation balloon ready to ascend over Ypres, France, 31 Oct 1917

Kite balloon being prepared for launch with a Canadian Kinematographer on board, May 1917
Kite balloon gas bag feing filled, May 1917
European Center of Military History (EUCMH)