21 Jul 1921
  • After dropping a total of 63 bombs since the previous day in experimental attacks on ships, including 1,000-pound and 2,000-pound bombs, battleship Ostfriesland sank in Chesapeake Bay, Maryland, United States, proving that capital ships could be destroyed by unopposed aircraft. ww2dbase [AC]
  • USS Maryland was commissioned into service. ww2dbase [Maryland | CPC]

Timeline Section Founder: Thomas Houlihan
Contributors: Alan Chanter, C. Peter Chen, Thomas Houlihan, Hugh Martyr, David Stubblebine
Special Thanks: Rory Curtis




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