The U.S. 7th Army and the British 8th Army met in Messina. Sicily was conquered.
On the same day, Allied artillery began to bombard mainland Italy.
The Quebec Conference opened in Quebec City between Franklin Roosevelt, Winston Churchill and William Lyon Mackenzie King.
King's role was only ceremonial. Stalin had been invited but could not attend. Military topics were the purpose of the meeting.
A target date for May 1 1944 was picked for the invasion of France, and September 3, 1943, for an invasion of Italy.
On the same day, the USAAF 5th Air Force began a five-day bombing campaign on Wewak on New Guinea.
The nocturnal engagement of the Battle off Horaniu saw the Japanese lose four auxiliary ships but evacuate 9,000 troops from Kolombangara in the Solomons.