in June 1942, the Japanese attacked Dutch Harbor, Alaska. The squadron's air echelon moved to Fort Glenn Army Air Base, on Umnak Island, Alaska to reinforce the 28th Composite Group in the Aleutian Islands, using the Consolidated B-24 Liberator and the LB-30 model of the Liberator. By September, the rest of the squadron had joined it in Alaska. The squadron frequently operated from advanced bases in the Aleutian Chain. On 14 September, along with the 404th Bombardment Squadron of the 28th Group, it conducted the first raid from Adak Army Air Field, an attack on Japanese naval forces at Kiska. By February 1943, American forces had occupied Amchitka, and the squadron began operating from Amchitka Army Air Field. On 18 July, the squadron provided planes that, along with planes from the 36th and 404th Squadrons, attacked Shimushu and Paramushiru in the Kuril Islands. Although the attack caused little damage, it was the first attack on Japan itself after the Doolittle Raid.