Keywords: the great war thegreatwar great war greatwar world war i worldwari world war one worldwarone the first world war thefirstworldwar wwi ww1 airplane biplane military aviation militaryaviation aircraft text Group photograph of an unidentified U.S. Army Air Service unit, posing in front of four American airplanes on an airfield somewhere in France during World War I in the winter. Snow is seen on the ground [believed to be at the American airfield at Toul, France] (undated) [Photograph collected by Henry L. Graves]. --From Henry L. Graves Papers, WWI 55, Military Collection, State Archives of North Carolina Group photograph of an unidentified U.S. Army Air Service unit, posing in front of four American airplanes on an airfield somewhere in France during World War I in the winter. Snow is seen on the ground [believed to be at the American airfield at Toul, France] (undated) [Photograph collected by Henry L. Graves]. --From Henry L. Graves Papers, WWI 55, Military Collection, State Archives of North Carolina |