21 Apr 1942
  • Large number of Japanese warships were dispatched in search for the carriers that launched the Doolittle Raiders. ww2dbase [Main Article | CPC]
  • US President Roosevelt ordered the seizure of all patents owned by enemy nations. ww2dbase [Main Article | CPC]
  • British submarine HMS Torbay sank German ship Delpa II 12 miles north of Crete, Greece at 1536 hours with her surface guns; Germans counterattacked with coastal guns followed by the dispatch of two torpedo boats, but Torbay would be able to dive and escape. ww2dbase [CPC]
Atlantic Ocean
  • German submarine U-576 sank US freighter Pipestone County 450 kilometers east of Virginia, United States at 1854 hours; all 35 aboard survived and were rescued by US Coast Guard cutter Calypso. ww2dbase [Main Article | Event | CPC]
  • German submarine U-84 sank Panamanian ship Chenango 30 miles off Cape Hatteras, North Carolina, United States at 0300 hours; 30 were killed, 2 survived. At 0236 hours, U-201 sank Norwegian ship Bris in the middle of the North Atlantic; 5 were killed, 21 survived. German submarine U-752 sank US freighter West Imboden 150 kilometers east of Boston, Massachusetts, United States; all 35 aboard survived. Meanwhile, German submarine U-459 departed from Germany on a resupplying mission for other submarines; she was the first of such supply submarines in the German Navy. ww2dbase [Main Article | CPC]
Australian Papua
  • Japanese aircraft based in Rabaul, New Britain attacked Port Moresby, Australian Papua. ww2dbase [CPC]
Burma
  • Japanese 18th Division captured Kyidaunggan, Burma from Chinese troops. ww2dbase [Main Article | CPC]
France
  • 20 French civilians were killed by Germans at Saint-Nazaire, France in retaliation of the 28 Mar 1942 raid by British commandos. ww2dbase [CPC]
  • William Leahy's wife Louise Tennent Harrington Leahy passed away from a post-surgery embolism in France, with Leahy at her side. She would later be buried at the Arlington National Cemetery in Virginia, United States. ww2dbase [Main Article | CPC]
Hawaii
  • Joseph Rochefort's cryptanalytic team based in Pearl Harbor, US Territory of Hawaii intercepted a Japanese Navy radio message noting that Carrier Division 5 (Shokaku and Zuikaku) were being detached from the Mobile Force for operations with the 4th Fleet in the South Pacific. ww2dbase [Main Article | Facility | CPC]
Iceland
  • Allied convoy QP-10 arrived at Reykjavík, Iceland. ww2dbase [Main Article | CPC]
Japan
  • USS S-35 remained off Paramushiro, Hokkaido, Japan in the Kurile Islands due to heavy fog. ww2dbase [Main Article | CPC]
Malta
  • Axis aircraft sank British anti-submarine trawler HMT Jade at Grand Harbour, Malta. ww2dbase [Main Article | CPC]
United States
  • The newspaper San Francisco News reported that the city government of San Francisco, California, United States was considering the banning the employment of Japanese-Americans. ww2dbase [CPC]
Photo(s) dated 21 Apr 1942
British Martlet IV (Wildcat) fighter at Naval Air Station, Anascotia, Washington DC, 21 Apr 1942, photo 1 of 2British Martlet IV (Wildcat) fighter at Naval Air Station, Anascotia, Washington DC, 21 Apr 1942, photo 2 of 2

21 Apr 1942 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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Famous WW2 Quote
"All that silly talk about the advance of science and such leaves me cold. Give me peace and a retarded science."

Thomas Dodd, late 1945