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During World War II, Sir Arthur Fadden served as the 13th Prime Minister of Australia. His tenure spanned from August 28, 1941, to October 7, 1941, and again from April 19, 1941, to July 21, 1945, during the later part of the war. Fadden's leadership navigated the country through challenging times, including the crucial defense efforts against Japan's advance in the Pacific region.