The battle started on June 4th 1942. Japan had wanted to seize Midway to continue expanding their empire. Japanese planes would attack Midway heavily, while their battleships would escape U.S. fire. Eventually the U.S. would sink the Japanese ships. This battle would eventually be considered the turning point of the Pacific War.
After the war in Europe ended, the U.S. was still fighting in the Pacific. FDR's successor Harry S. Truman had to choose to bomb Japan or to invade it by land. After, talking about it during the Potsdam meeting, Truman choose to bomb Japan with the Atomic bomb. Hiroshima was bombed first followed by Nagasaki two days later. Japan later surrendered after the second bombing.