In June 1942, the Japanese
bombed Dutch Harbor and landed troops on the western
Aleutian Islands of
Kiska and
Attu, which were quickly occupied within a few days. Reacting to the Japanese occupation, Ephriam D. Dickson III of the Field Museums Branch for the
U.S. Army Center of Military History wrote that the American public and leaders were "concerned that Japan might use these islands to launch
air raids against the
Pacific Northwest, especially targeting the
Boeing bomber plant and
Bremerton Navy Yard in
Seattle". Castner's Cutthroats were selected to head
reconnaissance missions and helped plan landing zones for
amphibious assaults on the Japanese-held occupied islands. During the American counterattack, Castner's Cutthroats main mission was to serve as guides and messengers for the
U.S. Army. However, when battle preparations were being made to
invade Attu and
Kiska, they warned the Army that wheeled vehicles would not function on the permafrost and the soldiers would need to be outfitted with warm gear and plenty of food, a warning that was largely ignored. Consequently, many soldiers owed their lives to Castner's Cutthroats for protecting them from the weather and providing them with food.
Adak Island landing strip One of the major successes of Castner's Cutthroats was the building of an airfield on
Adak Island. The
U.S. Army Air Forces had lost several planes, not to the Japanese, but to
Alaskan weather. In order to shorten the distance between the Japanese and American air bases, an airfield on Adak Island was proposed and Castner's Cutthroats were sent in to scout for a suitable location. Due to the mountainous terrain of the area, no acceptable site was available. Instead, Castner's Cutthroats dammed a lagoon and drained it to use the sandy bottom floor as a temporary landing strip. Engineers later came in and improved the area. ==Equipment==