Japanese occupation of Kiska

The Japanese occupation of Kiska took place between 6 June 1942 and 28 July 1943 during the Aleutian Islands Campaign of the Pacific War. The Japanese occupied Kiska and nearby Attu Island in order to protect the northern flank of the Japanese Empire.

Occupation
Initially, the only American military presence on Kiska was a ten-man weather station. The Japanese stormed the station, killing two Americans and capturing the remaining eight. The eight prisoners of war were sent to Japan.

The attack on Pearl Harbor and beginning of the Pacific Theatre in World War II, coupled with Japanese threats to the west coast of North America and the Aleutian Islands, had already made the construction of a defense access highway to Alaska a priority. On 6 February 1942, the construction of the Alaska Highway was approved by the U.S. Army and the project received the authorization from the U.S. Congress and President Franklin D. Roosevelt to proceed five days later.

Reacting to the Japanese occupation, American and Canadian air forces waged a continuous air bombardment campaign against the Japanese forces on Kiska. Also, U.S. Navy warships blockaded and periodically bombarded the island. Several Japanese warships, transport ships, and submarines attempting to travel to Kiska or Attu were sunk or damaged by the blockading forces.

In 1943, U.S. forces landed on and destroyed the Japanese garrison on Attu. In response, the Imperial Japanese Navy successfully evacuated the Kiska garrison on 28 July, ending the Japanese presence in the Aleutian Islands. Not completely sure that the Japanese were gone, the Americans and Canadians executed an unopposed landing on Kiska on 15 August, securing the island and ending the Aleutian Islands campaign.

Naval operations
On 19 June 1942, American aircraft attacked and sank the Japanese oiler Nissan Maru in Kiska Harbor and on 30 June American naval forces bombarded the island. The American submarine USS Growler (SS-215) attacked and sank one Japanese destroyer 7 mi east of Kiska Harbor on 5 July, two other destroyers were also heavily damaged. Over 200 Japanese sailors were killed or wounded while the Americans sustained no losses, it became the single bloodiest engagement during the operations on and around Kiska. USS Grunion (SS-216) was attacked by three Japanese submarine chasers while patrolling Kiska Harbor on 15 July. In response, she fired on and sank two of the Japanese ships and damaged the third. Grunion was lost a few weeks later off Kiska on 30 July with all hands, she is suspected of being sunk after one of her own torpedoes circled back when she attacked the Kano Maru.

On 8 August, the Japanese cargo ship Kano Maru was sunk at Kiska Harbor by PBY Catalinas. Days before, the cargo ship was damaged by one of Grunion's torpedoes. Troopship Nozima Maru was also bombed and sunk in Kiska Harbor on 15 September. On 5 October, the Japanese steamer Borneo Maru was sunk at Gertrude Cove and on 17 October, the destroyer Oboro was sunk by American aircraft. JAPANESE SUBMARINE RO-65 sank off Kiska on 4 November, Montreal Maru on 5 January 1943, and Uragio Maru on 4 April. JAPANESE SUBMARINE I-7 was grounded and abandoned by her crew on 23 June while assisting in removing Kiska's garrison. She was chased onto the rocks by USS Monaghan (DD-354).