Established in 1942, these World War II installations were the westernmost in the nation for a short while, and allowed American forces to mount a successful offensive against the Japanese-held Aleutian islands of Kiska and Attu.

Until very recently, Adak, located about 1,400 air miles southwest of Anchorage, remained an active naval station.

Information provided by the National Register of Historic Places, a program of the National Park Service.