20 Jul 1942


- US Marines sailed from New Zealand for exercises at Fiji. ww2dbase [CPC]
- USS S-28 received orders to patrol the area surrounding Sirius Point, Aleutian Islands. ww2dbase [S-28 | CPC]
- Japanese submarine I-11 sank Greek ship G. S. Livanos 75 miles south of Sydney, Australia. ww2dbase [CPC]
- The US submarine Scorpion was launched, sponsored by Ms. Elizabeth T. Monagle. ww2dbase [Scorpion | CPC]
- US 1st Marine Division issued the Operation Watchtower plans for the invasion of Guadalcanal in the Solomon Islands. ww2dbase [Guadalcanal Campaign | CPC]
- Wilhelm Keitel entertained with the idea of branding Soviet prisoners of war/slave laborers on the buttocks similar to how one would treat cattle. ww2dbase [Wilhelm Keitel | CPC]
- 3 B-17 bombers of US 11th Air Force attacked Kiska, Aleutian Islands. At Adak Island, seaplane tender USS Gillis was attacked by Japanese H6K flying boats, received one hit, but sustained no damage as the bomb failed to explode. Finally, on Unalaska Island, the US Navy established Naval Air Facility Dutch Harbor and Naval Operating Base Dutch Harbor. ww2dbase [CPC]
- Douglas MacArthur departed Melbourne, Australia. ww2dbase [Douglas MacArthur | Melbourne, Victoria | CPC]
- Tenryu departed Rabaul, New Britain for Buna, Australian Papua. ww2dbase [Tenryu | Rabaul, New Britain | CPC]
- USS S-43 embarked Flight Officer Cecil John Trevelyan Mason of the Royal Australian Air Force at New Ireland; Mason had been put ashore to make contact with friendly agents, but had failed to find them. ww2dbase [S-43 | New Ireland | CPC]
- 24 Japanese G4M bombers and 15 A6M fighters attacked Port Moresby, Papua on the island of New Guinea. Meanwhile, at Rabaul, New Britain, 5th Sasebo Special Naval Landing Force of the Japanese Navy and Yokoyama Detachment of the Japanese 17th Army departed on three transports. ww2dbase [New Guinea-Papua Campaign, Phase 2 | Port Moresby | CPC]
- German submarine U-132 damaged transport Frederika Lensen of Allied convoy QS-19 off Anticosti Island in the Gulf of Saint Lawrence in Canada at 1839 hours; 4 were killed, 36 survived. Frederika Lensen would be beached to prevent sinking although she would ultimately be declared a total loss due to extensive damage. ww2dbase [Second Happy Time | U-132 | Gulf of Saint Lawrence, Quebec | CPC]
- HMS Eagle departed Gibraltar with 31 Spitfire fighters and 4 Swordfish torpedo bombers for Malta in Operation Insect. ww2dbase [Eagle | CPC]
- German armed merchant cruiser Thor sank British ship Indus 1,950 miles west of Australia; 22 were killed, 49 survived. ww2dbase [Thor | Raids into the Indian Ocean | CPC]
- Benito Mussolini arrived in Rome, Italy. ww2dbase [Benito Mussolini | Rome | CPC]
- Suzanne Walker became the first enlisted member of the Women's Royal New Zealand Naval Service. ww2dbase [CPC]
- British steam merchant Empire Tide arrived at Arkhangelsk, Russia and disembarked the survivors of Dutch merchant steamer Paulus Potter and US merchant steamer Washington. ww2dbase [Arctic Convoys | Arkhangelsk | HM]
- Nikolai Kamanin received orders to travel to Moscow, Russia to take command of the newly formed 292nd Ground Attack Air Division. ww2dbase [Nikolai Kamanin | CPC]
- Soviet troops retook the German bridgehead at Voronezh, Russia. ww2dbase [Caucasus Campaign | Voronezh | TH]
- US minesweeper Chickadee was launched. ww2dbase [CPC]
- Destroyer USS Chevalier was commissioned into service. ww2dbase [CPC]
- US submarines Scamp was launched. ww2dbase [Scamp | CPC]
- The keel of US submarine Ray was laid down by the Manitowoc Shipbuilding Company in Manitowoc, Wisconsin, United States. ww2dbase [Ray | Manitowoc, Wisconsin | CPC]
- The keel of US destroyer Prichett was laid down. ww2dbase [CPC]
- The keel of US destroyer escort Moore was laid down. ww2dbase [CPC]
- The first members of the US Women's Army Auxiliary Corps began training at Fort Des Moines, Iowa, United States. ww2dbase [Des Moines, Iowa | CPC]
- The US Army officially activated the 506th Parachute Infantry Regiment at Camp Toccoa, Georgia, United States. ww2dbase [Toccoa, Georgia | CPC]
- USS R-1 arrived at New London, Connecticut, United States. ww2dbase [R-1 | New London, Connecticut | CPC]



20 Jul 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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