20 Jun 1944
  • Light carrier Ryuho was slightly damaged by US TBF aircraft at 1810 hours during the Battle of the Philippine Sea. ww2dbase [Main Article | Tabular Record of Movement | CPC]
  • Destroyer Yukikaze rescued survivors of transport Seiyo Maru during the Battle of the Philippine Sea then scuttled the transport with a torpedo. ww2dbase [Main Article | CPC]
  • USS Astoria departed Philadelphia, Pennsylvania, United States for her shakedown cruise. ww2dbase [Main Article | CPC]
  • The Americans launched their first attack on Cherbourg, France. ww2dbase [Main Article | TH]
  • Soviets captured Viipuri on the Karelian Isthmus. ww2dbase [TH]
  • Bernard Montgomery was awarded the title of Grand Commander of the Order of King George I of Greece. ww2dbase [Main Article | CPC]
  • The US Tenth Army, consisting of the XXIV Corps (US Army) and the III Amphibious Corps (US Marine Corps) was activated under the command of Lieutenant General Simon Bolivar Buckner, Jr. ww2dbase [Main Article | AC]
  • Major General Kanemasa Akiyama was named the commanding officer of Japanese Unit 516 chemical weapons research unit based in Qiqihar, Nenjiang Province, China, replacing Major General Yamawaki Masao. ww2dbase [Main Article | CPC]
  • Viipuri, Finland was captured by the Soviets. ww2dbase [Main Article | CPC]
  • Japanese troops captured Forest Hill near Imphal, India but failed to capture Plum Hill, another nearby objective. ww2dbase [Main Article | CPC]
  • British troops captured Perugia, Italy. ww2dbase [Main Article | TH]
  • Destroyer Yuzuki completed her refitting at Sasebo, Japan. She received a Type 13 radar on her main mast, exchanged twin 13-mm machine gun mounts for single 25-mm machine gun mounts. ww2dbase [Main Article | Facility | CPC]
Pacific Ocean
  • USS Yorktown (Essex-class) steamed west while search planes groped for the fleeing enemy task force. Contact was made with the enemy late in the day and Yorktown?s planes attack the Japanese carrier Zuikaku. ww2dbase [Main Article | Event | DS]
  • USS Bluefish pursued a Japanese transport in the Makassar Strait, expending 5 torpedoes., ww2dbase [Main Article | CPC]
  • Jakob Edelstein, the former senior Jewish elder ("Judenaeltester") of the Theresienstadt Concentration Camp, and his family were shot in Auschwitz Concentration Camp in occupied Poland. ww2dbase [Main Article | Facility | CPC]
  • The underground Directorate of Civil Defense in Warsaw, Poland sent a radio message to London, England, United Kingdom: "Since May 15, mass murders have been carried out in Auschwitz. Jews are taken first, then Soviet prisoners of war, and the so-called sick. Mass transports of Hungarian Jews arrive. Thirteen trains per day, 40-50 cars each. Victims convinced [that] they will be exchanged for [German] POWs or resettled in the East. Corpses are burned in crematoria and out in the open. Over 100,000 people from Hungary have been gassed to date." ww2dbase [CPC]
United Kingdom
  • German Type IXC U-Boat U-505ís cipher material arrived at Bletchley Park allowing the Allies to break most of the remaining Enigma settings. ww2dbase [Main Article | Event | DS]
  • The airfield at Biggin Hill, south-east London, England, United Kingdom had now become the centre for the defence of South London. 700 balloon personnel including 170 WAAFs were stationed there. Early in the morning one of the recently raised balloons brought down a V-1 flying bomb that exploded in an orchard. Tempest V aircraft pilots from 3 Squadron at RAF Newchurch in Kent brought down 9 bombs and the New Zealand pilots of 486 squadron who shared the airfield brought down a further 3. An American pilot 1st Lieutenant D. W. Johnston of 356th Fighter Squadron of 358th Fighter Group USSAF flying a P-47 aircraft brought down one over the British Channel; he was returning to his base at High Halden, Kent from a fighter/bomber raid against rail traffic in occupied France. ww2dbase [Main Article | HM]
Photo(s) dated 20 Jun 1944
Japanese Carrier Division ThreeCanadian crew of a Sherman tank south of Vaucelles, Normandy, France, Jun 1944Japanese vessels burning at a harbor near Garapan, Saipan, Mariana Islands, Jun 1944US Marines taking position behind cover, Saipan, Mariana Islands, Jun 1944
See all photos dated 20 Jun 1944

20 Jun 1944 Interactive Map

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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