Third and fourth terms of the presidency of Franklin D. Roosevelt well-defended island of Iwo Jima, taking control of that island the following month. On April 1, the U.S. landed on Okinawa Island, the largest of the Ryukyu Islands. The Japanese allowed the Americans to land on the island before launching a fierce attack that included "kamikaze" suicide attacks by Japanese aircraft. Japanese forces on Okinawa held out until June 1945; U.S. forces suffered over 60,000 casualties during the operation. In late 1943, Roosevelt, Churchill, and Stalin agreed to meet to discuss strategy and post-war plans at the Tehran Conference, which marked Roosevelt's first face-to-face meeting with Stalin. At the conference,
Canton Island Airport Squadron were sent to the airfield. The Imperial Japanese Army did not invade Canton, although the airfield was bombarded on 1 November 1943 by the Japanese submarine I-36. After the war, it was returned to civilian control. Canton Island airport continued to see use during the 1950s as a trans-Pacific stopover for DC-4, DC-6B and DC-7C aircraft for Pan American, British Commonwealth Pacific Airlines, QANTAS and Canadian Pacific Airlines, but with the advent of long-range jet aircraft during the 1960s, their need for the island faded, and the airfield and its associated facilities were ultimately abandoned in 1965. It would