At 0015 hours, Yamamoto ordered the night engagement at Midway to be canceled; at 0255 hours, he ordered the entire Operation MI to be canceled. In the battle zone, heavily damaged Japanese carriers Akagi and Hiryu were scuttled. To the west, heavy cruisers Mogami and Mikuma suffered a collision as they attempted to avoid submarine USS Tambor; Mogami suffered 92 killed and heavy damage in the collision. Far to the north, in the Aleutian Islands, aircraft from Japanese carriers Ryujo and Junyo attacked Dutch Harbor, US Territory of Alaska as Japanese troops occupied Attu.
