On August 15, 1943, Allies landed on Kiska in the Aleutians. An excerpt from the article:
"Battle of Kiska: Operation Cottage
Having learned bitter lessons at Attu, American commanders made certain that their soldiers had better equipment and proper clothing for the assault on Kiska, code-named Operation Cottage, where they expected to encounter several times as many Japanese troops as they’d faced on Attu. However, when U.S. ships arrived at Kiska on August 15, 1943, the weather was strangely clear and the seas quiet, and the approximately 35,000 soldiers landed unopposed. Then, after several days of scouring the island, they discovered that the Japanese had evacuated the entire garrison several weeks earlier, under cover of fog. On August 24, when U.S. troops declared Kiska Island secure, the Battle of the Aleutian Islands ended.
Japan's Defeat and Repositioning
Following its defeat in the Aleutians, the Japanese navy reassigned some of its Pacific forces to defend Japan’s northern flank against a possible American invasion from the Alaskan Peninsula. This decision removed a significant number of Japanese troops and resources that might otherwise have been committed to resisting U.S. forces in the South Pacific that were then island-hopping toward Japan. To fuel Japan’s perception that it was threatened from the U.S. Northwest, American planes in the Aleutians conducted occasional bombing raids against Japan’s Kuril Islands, which lie between Japan and Alaska.
Two years after the Battle of the Aleutian Islands, Japan formally surrendered to the Allies on September 2, 1945, effectively ending World War II."