why did the japanese want to take over port moresby
New Guinea campaign The colonial capital of Port Moresby on the south coast of Papua was the strategic key for the Japanese in this area of operations. Capturing it would both neutralize the Allies' principal forward base and serve as a springboard for the invasion of Australia.[9] For the same reasons, General Douglas MacArthur, Supreme Commander Allied Forces South West Pacific Area was determined to hold it. MacArthur was further determined to conquer all of New Guinea in his progress toward the eventual recapture of the Philippines.[10] General Headquarters Southwest Pacific Area Operational Instruction No.7 of 25 May 1942, issued by Commander-Allied-Forces, General Douglas MacArthur, placed all Australian and US Army, Air Force and Navy Forces in the Port Moresby Area under the control of New Guinea Force.[11]
Occupation of Japan In 1949, MacArthur made a sweeping change in the SCAP power structure that greatly increased the power of Japan's native rulers, and the occupation began to draw to a close. The Treaty of San Francisco, which was to end the occupation, was signed on September 8, 1951. It came into effect on April 28, 1952, formally ending all occupation powers of the Allied forces and restoring full sovereignty to Japan, except for the island chains of Iwo Jima and Okinawa, which the United States continued to hold. Iwo Jima was returned to Japan in 1968, and most of Okinawa was returned in 1972.