Asiatic-Pacific Theater

The Asiatic-Pacific Theater, was the area of operations of U.S. forces during World War II in the Pacific War during 1941-45. From mid-1942 until the end of the war in 1945, there were two U.S. operational commands in the Pacific. The Pacific Ocean Areas (POA), divided into the Central Pacific Area, the North Pacific Area and the South Pacific Area, were commanded by Admiral Chester Nimitz, Commander-in-Chief Pacific Ocean Areas. The South West Pacific Area (SWPA), including New Guinea, Philippines, Borneo, and the Dutch East Indies, was commanded by General Douglas MacArthur, Supreme Allied Commander South West Pacific Area. During 1945, the United States added the U.S. Strategic Air Forces in the Pacific, commanded by General Carl Spaatz.

Because of the complementary roles of the United States Army and the United States Navy in conducting war in the Pacific Theater, there was no single Allied or U.S. commander (comparable to General Dwight Eisenhower in the European Theater of Operations). There was no actual command; rather, the Asiatic-Pacific Theater was divided into the SWPA, the POA, and other forces and theaters, such as the China-Burma-India Theater.

...
Wikipedia