アッツ島沖海戦
The military importance of this frozen, difficult-to-supply island was questionable, but the psychological impact upon the Americans of losing U.S. soil to a foreign enemy for the first time since the War of 1812 was tangible. During the winter of 1942–43, the Japanese reinforced and fortified the islands—not necessarily to prepare for an island-hopping operation across the Aleutians, but to prevent a U.S. operation across the Kuril Islands. The U.S. Navy began operations to deny Kiska supply which would lead to the Battle of the Komandorski Islands. During October 1942, American forces undertook seven bombing missions over Kiska, though two were aborted due to inclement weather. Following the winter, Attu was recaptured, and bombing of Kiska resumed for over two months, until a larger American force was allocated to defeat the expected Japanese garrison of 5,200 men.