In March 1943, the installations atop Caines Head were named McGilvray after an Army officer who commanded Fort Kenay to the north in 1869. After American and Canadian forces reclaimed Attu and Kiska islands in the Aleutian Islands Campaign between May and August 1943, the Alaskan Department ordered the installations dismantled in March 1944. Many of the constructions were not yet fully completed. The guns were disassembled and shipped to locations in South Dakota and San Diego and the buildings were abandoned.