Events occurring on Tuesday, October 20, 1942  
  The Battle for Guadalcanal  
  The heavy cruiser Chester (CA 27) was torpedoed by Japanese submarine I-176, 120 miles southeast of San Cristobal, Solomon Islands. The USS Chester went dead in the water but after two hours she was able to slowly steam towards Espirtu Santo where she arrived on October 23 for emergency repairs.  
  Naval Action in the Mediterranean  
  The 18 ton Syrian sailing ship Mahrous was sunk by gunfire by the U-77, commanded by Oberleutnant zur See Otto Hartmann, 30 miles northwest of Saida, Lebanon in the eastern Mediterranean Sea.  
  The Battle of the Atlantic  
  The U-216, commanded by Oberleutnant zur See Karl-Otto Schultz, was sunk by depth charges from a British Liberator aircraft southwest of Ireland in the North Atlantic Ocean. All of the ship’s complement of 45 died. During its career the U-216 sank 1 merchant ship for a total of 4,989 tons.  
  Allied Submarine Warfare in the Pacific  
  The submarine USS Drum (SS 228), commanded by Lt. Commander Robert H. Rice, torpedoed and sank the 5,106 ton Japanese merchant cargo ship Ryunan Maru off Honshu, Japan.  
  The submarine USS Finback (SS 230), commanded by Lt. Commander Jesse L. Hull, torpedoed and sank the 9,476 ton Japanese army passenger-cargo ship Africa Maru and 5,359 ton Japanese cargo ship Yamafuji Maru west of Formosa.  
  The submarine USS Tautog (SS 199), commanded by Lt. Commander Joseph H. Willingham, sank the 33 ton Japanese fishing vessel Nanshin Maru with gunfire in the Sulu Sea.  
  The submarine USS Gar (SS 206), commanded by Lt. Commander Donald McGregor, lays 32 mines in the approaches to Bangkok, Thailand.  
  The Nisei - Japanese Americans in WW2  
  The trial of Gordon Hirabayashi began in Seattle. Hirabayashi was a University of Washington student and Quaker who violated the curfew and exclusion restrictions on May 16, 1942 for the purpose of challenging the exclusion laws to the U.S. Supreme Court. On June 21, 1943 the Supreme Court ruled in Hirabayashi v. the United States ruled that a curfew may be imposed against one group of Americans citizens based solely on ancestry and that Congress in enacting Public law 77-503 authorized the implementation of Executive Order 9066 and provided criminal penalties for violation of orders of the Military Commander.  
  Ships Commissioned  
  A ship's commissioning was when the ship was handed over, post fittings and trials, to the end user which, in this case, was a combatant navy.  
  The submarine U-191 was commissioned. Her first commander was Kapitänleutnant Helmut Fiehn.  
  October 1942 Calendar  
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The objective of is to provide a day by day account of the events that lead up to and were part of the greatest conflict known to mankind. There are accounts for the activities of each particular day and timelines for subjects and personalities. It is the of this website intent to provide an unbiased account of the war. Analysis, effects caused by an event, or prior or subsequent pertinent events are presented separately and indicated as text that is italicized.

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