Gen. MacArthur commanded which theater?

• A. Southwest Pacific theater
• B. Central Pacific theater
• C. European Theater
• D. Pacific Ocean theater

Answer: (A)

MacArthur’s role in World War II was as commander of Allied forces in the Southwest Pacific Area, based in Australia. From early 1942 he directed all Allied operations in that region, steering campaigns from New Guinea through the liberation of the Philippines. This assignment defined his theater, distinct from the Central Pacific under Admiral Nimitz and from the European Theater under Eisenhower. While MacArthur operated across the broader Pacific, his formal command was the Southwest Pacific, making that the correct choice. The Central Pacific focuses on different island-hopping campaigns under Nimitz, and the European Theater was a separate Allied command; the broader term Pacific Ocean theater is not the precise designation for his primary command.