World War II by country They also had their own separate concentration camps, such as the Jasenovac death camp. See Northern Rhodesia, which it was called at the time. See Southern Rhodesia, which it was called at the time. World War II by country Nearly every country and territory in the world participated in World War II, with the exception of only a few nations which remained neutral. The Second World War pitted two alliances against each other, the Axis powers and the Allied powers. The leading Axis powers were Nazi Germany, the Kingdom of Italy and the Empire of Japan; while the United Kingdom,
Allied invasion of Italy Operation Avalanche–the main invasion at Salerno by the American Fifth Army under Lieutenant General Mark Clark–began on 9 September 1943, and in order to secure surprise, it was decided to assault without preliminary naval or aerial bombardment. However, as Admiral Henry Hewitt, the amphibious force commander, had predicted, tactical surprise was not achieved. As the first wave of Major General Fred Walker's U.S. 36th Infantry Division approached the Paestum shore at 03:30 a loudspeaker from the landing area proclaimed in English: ""Come on in and give up. We have you covered."" The Allied troops attacked nonetheless. Major General Rudolf Sieckenius,