Aerial view of the captured German battleship Ostfriesland after it was attacked by the U.S. Army Air Service’s First Provisional Air Brigade, led by Brig. Gen. William “Billy” Mitchell, on July 21, 1921. 
  • 99-40834

  • Copyright/Owner: Smithsonian Institution
  • Source: National Air and Space Museum Archives, Smithsonian Institution
  • For print or commercial use please see our permissions page.