World War II: British and Canadian troops land on the Italian mainland. On the same day, Walter Bedell Smith and Giuseppe Castellano sign the Armistice of Cassibile, although it is not announced for another five days.

Operation Baytown was an Allied amphibious landing on the mainland of Italy that took place on 3 September 1943, part of the Allied invasion of Italy, itself part of the Italian Campaign, during the Second World War.

The Armistice of Cassibile was an armistice that was signed on 3 September 1943 by Italy and the Allies. It marked the end of hostilities between Italy and the Allies during World War II.