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,
Action of 23 April 1945 struck the U-boat which had a Japanese flag painted on the side. The German submarine sank quickly at position with 54 men still aboard, including "Kapitänleutnant" (Lieutenant Commander) Fritz Schneewind. Afterward, the Americans surfaced and rescued one wounded German warrant officer and took him prisoner. Action of 23 April 1945 The Action of 23 April 1945 was a submarine engagement of World War II that occurred in the Java Sea between Nazi Germany and the United States. It resulted in the last sinking of a German U-boat in Asian waters during the Pacific War and was one of only a