3 Apr 1943
- German Fw 190 fighters strafed Eastbourne, England, United Kingdom. ww2dbase [Battle of Britain | CPC]
- US 1st Infantry Division captured Hill 369 near El Guettar, Tunisia. ww2dbase [Battle of El Guettar | CPC]
- USS Tunny set sail for Namonuito, Caroline Islands. ww2dbase [Tunny | CPC]
- Destroyer Yuzuki rescued the survivors of sunken tanker Arima Maru. ww2dbase [Yuzuki | CPC]
- The US submarine Pickerel was depth charged and sunk by Japanese warships north of Honshu, Japan. ww2dbase [Pickerel | AC]
- The Indian Army Medical Corps was formed by amalgamating the Indian Medical Services, the Indian Medical Department and the Indian Hospital Corps. ww2dbase [AC]
- Oberleutnant Josef Luxenburger, Hauptmann Wilhelm Mylius, and Oberfeldwebel Fraz Placzek of the German Kampfgeschwader 55 wing were awarded the Knight's Cross of the Iron Cross. ww2dbase [CPC]
- Admiral Yamamoto and his staff departed Truk, Caroline Islands for Rabaul, New Britain on two Kawanishi H8K flying boats to supervise Operation I-GO from 7 to 14 Apr 1943, expecting to return to flagship Musashi on 19 Apr 1943. They arrived at Rabaul at 1340 hours. ww2dbase [Isoroku Yamamoto | Rabaul, New Britain | CPC]
- USS Sunfish arrived at Pearl Harbor, US Territory of Hawaii, ending her second war patrol. ww2dbase [Sunfish (Gato-class) | Honolulu, Oahu | CPC]
- After repairs and upgrades to her deck armament, Gato-class submarine USS Silversides departed Pearl Harbor, Hawaii for her patrol area after two previous departures thwarted by mechanical failures. ww2dbase [Silversides | Pearl Harbor, Oahu | DS]
- USS Haddock fired 4 torpedoes at converted fleet oiler Arima Maru carrying 7,880 tons of oil, sinking her with 3 hits in the Philippine Sea. Her conning tower and radar system was damaged by depth charges from destroyer Yuzuki. ww2dbase [Haddock | CPC]
- Clifton Cates was promoted to the permanent rank of brigadier general. ww2dbase [Clifton Cates | Quantico, Virginia | CPC]

3 Apr 1943 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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