Keywords: aviation aircraft airplane biplane military aviation militaryaviation 278th aero squadron 278thaerosquadron 278th a.s. 278thas de havilland dh.4 dehavillanddh4 dh.4 dh4 the great war thegreatwar great war greatwar world war i worldwari world war one worldwarone the first world war thefirstworldwar wwi ww1 outdoor Photograph of a pilot and his aerial observer with the 278th Aero Squadron, 2nd U.S. Army Air Service, pictured seated in their airplane on an airfield in France during World War I (undated) [Photograph taken by or collected by Henry L. Graves]. --From Henry L. Graves Papers, WWI 55, Military Collection, State Archives of North Carolina Photograph of a pilot and his aerial observer with the 278th Aero Squadron, 2nd U.S. Army Air Service, pictured seated in their airplane on an airfield in France during World War I (undated) [Photograph taken by or collected by Henry L. Graves]. --From Henry L. Graves Papers, WWI 55, Military Collection, State Archives of North Carolina |