17 Jul 1920
  • USS Arizona was given the designation BB-39. ww2dbase [Arizona | CPC]
Poland
  • The Bolsheviks crossed into Polish territory and began their advance on Warsaw. ww2dbase [AC]
United States
  • USS R-5 was given the hull number of SS-82. ww2dbase [R-5 | 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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