| Date | Event |
|---|---|
| October 01 1943 | Naples Falls To Allied Soldiers |
| October 04 1943 | US Captures Solomon Islands In World War II |
| October 05 1943 | Japanese Execute American POWs |
| October 10 1943 | Double Tength Incident Occurs In Japan |
| October 13 1943 | Italy Sides With Allies, Declares War On Germany |
| October 14 1943 | Half Of Polish Prisoners Escape Nazi Camp |
| October 14 1943 | World War II |
| October 14 1943 | Jose Laurel Inaugurated Phillippines' President |
| October 17 1943 | Burma Railway Completed |
| October 17 1943 | Sobibór Extermination Camp Closed |
| October 19 1943 | Streptomycin Isolated By Rutgers Researchers |
| October 20 1943 | Sinfra Suffers Allied Attack, 2098 Drown |
| October 21 1943 | India: Bose Declares Provisional Government |
| October 22 1943 | Royal Air Force Air Raids Kassel |
| October 24 1943 | India Declares War |
| October 26 1943 | Pfeil's Maiden Flight Occurs During WWII |
| October 31 1943 | First Radar-guided Interception In World War-II |