U.S. Marines attaching bomb to DH-4 (de Havilland) “Liberty Plane,” circa 1918 (Zimmer/Naval History and Heritage Command)
U.S. Marines attaching bomb to DH-4 (de Havilland) “Liberty Plane,” circa 1918 (Zimmer/Naval History and Heritage Command)

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Photo by: Naval History and Heritage Command |  VIRIN: 180705-D-BD104-001.JPG