July 13, 1921

1921: Brig Gen William “Billy” Mitchell’s Martin MB-2 and Handley Page bombers test the sinking of several ships off the Virginia Capes. The tests study the use of bombs on ships to sug­gest how ship design could counter an air attack. The bombers sink a German sub, the destroy­er G-102, the light cruiser Frankfurt, and the battleship Ostfriesland on 21 July to prove that un­opposed aircraft could sink capital ships. (Depiction)