Air Operations, Bismarcks - 140 V Bomber Command B-24s, B-25s, and B-26s attack Cape Gloucester.
- 20 3rd Light Bomb Group A-20s attack Japanese Army ground forces near Arawe.
- 37 V Fighter Command P-39s attack Gasmata.
- In the first mission of its kind from bases in the South Pacific Area, 41 5th and 307th Heavy Bomb group B-24s, escorted by 48 AirSols P-38s and RNZAF Kittyhawks, are sent to attack Rabaul and Simpson Harbor. The B-24s are based at Guadalcanal, but they need to pass through the Munda Point airfield on New Georgia in order to reach Rabaul. Due to bad weather, only 6 5th Heavy Bomb Group B-24s are able to reach Rabaul. 2 F4Us are lost when an estimated 50 Japanese fighters intercept the strike force.
- VMF-222 F4Us down 3 A6M Zeros near Rabaul at 1315 hours.
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Air Operations, CBI
BURMA
- During the night, 20 7th Heavy Bomb Group B-24s attack dock areas and rail yards in Rangoon.
CHINA
- Japanese bombers attack Yunnani Airdrome without loss.
- 12 11th Medium Bomb Squadron B-25s and 8 14th Air Force P-40s attack Ansiang and Nanhsien.
- 25th Fighter Squadron P-40s down 60 Ki-48 'Lily' bombers and 4 A6M Zeros in a running fight from Yunnanyi to the southeast during the late morning.
THAILAND
- During the night, 20 of 21 7th Heavy Bomb Group B-24s sent attack the Bangkok port area with 110 500-pound bombs, including 59 incendiaries.
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Air Operations, Europe
12th AIR FORCE
ITALY:
- XII Air Support Command B-25s attack the marshalling yards and airdrome at Orte and the marshalling yards at Terni.
- XII Air Support Command A-20s attack Orte and Cassino.
- XII Air Support Command A-36s attack the rail line and port at Civitavecchia.
- XII Air Support Command P-40s attack a dump near Arce and two towns.
YUGOSLAVIA:
- XII Air Support Command P-40s attack ships at Solin, Split, and Trogir.
15th AIR FORCE
AUSTRIA:
- 15th Air Force B-17s attack a marshalling yard at Innsbruck.
GERMANY:
- In the 15th Air Force's first attack on a target on German soil, 50 unescorted B-24s attack the Messerschmitt research and experimental facility and Bf-110 assembly plant at Augsburg with 86 tons of bombs through a near-total undercast. Bomber gunners claim 21 Luftwaffe fighters downed or probably downed.
ITALY:
- 15th Air Force B-26s attack rail facilities and marshalling yards at three locations.
- After missing its rendezvous with heavy bombers, the 15th Air Force's 325th Fighter Group, in P-47s, strafes the Ancona Airdrome, a ship, a train, and several truck convoys.
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Air Operations, Marshalls - 29 VII Bomber Command B-24s based at Baker Island and Nanomea attack the Maloelap and Mille atolls. 318th Fighter Group P-39s based at Starmann Field on Butaritari strafe the airfield on Mille.
- A P-39 with the 318th Fighter Group’s 72d Fighter Squadron downs an A6M Zero over the Mille Atoll at 1015 hours, but 2 P-39s are downed by Japanese Navy fighters.
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Air Operations, New Guinea - 30 V Bomber Command B-25s and B-26s attack the airfield at Madang.
- A total of about 30 5th Air Force B-25s, A-20s, and P-39s attack barges and Japanese Army positions near Finschhafen as 348th Fighter Group P-47s sweep the northeast coast.
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Air Operations, Solomons - A VF(N)-75 F4U night-fighter downs an A6M2-N 'Rufe' fightr-bomber near Cape Torkina at 0235 hours.
- 25 42nd Medium Bomb Group B-25s attack a bivouac and a supply dump on Bougainville. Numerous AirSols aircraft attack targets of opportunity, bypassed airdromes, and other targets throughout the Bougainville and Buka areas.
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CBI Chiang Kai-shek rejects the request of the SEAC commander, Adm Lord Louis Mountbatten, for Chinese forces to participate in the Burma offensive.
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New Britain The US forces at Arawe take the nearby Japanese airstrip and fight off minor Japanese counter-attacks.
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Occupied France Rommel inspects the 'Atlantic Wall' defenses on the French coast.
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Pacific The Japanese destroyer Numakaze is sunk by the US submarine Grayback (SS-208) off the Ryukyu Islands.
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Soviet Union, Home Front The new National Anthem, composed by Alexander V. Alenxandrov with lyrics by S. Mikhailov and I. Registan, replaces the 'Internationale'.
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Images from December 19, 1943
Examining an Italian Machine Gun
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Feeding the POWs
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US Mortar Crew
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Busy Pier Scene at Fremantle, Australia
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American Artillery Observers
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Removing a Detonator from German S-MIne
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Chasing Turkeys
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Celebrating Christmas in Italy
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F4U Corsair with Tail Damage
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American Bombers Hit Madang Harbor
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