The first offensive operation was launched from the airfield at Funafuti on 20 April 1943 when twenty-two B-24 "Liberator" bombers from 371 and 372 Bombardment Squadrons struck Nauru. The next day the Japanese made a predawn raid on the strip at Funafuti which destroyed one B-24 and caused damage to five other planes. On 22 April 12 B-24 aircraft struck Tarawa. The airfield at Funafuti became the headquarters of the United States Army Air Forces VII Bomber Command in November 1943, directing operations against Japanese forces on Tarawa and other bases in the Gilbert Islands. USAAF B-24 "Liberator" bombers of the 11th Wing, 30th Bombardment Group, 27th Bombardment Squadron and 28th Bombardment Squadron operated from Funafuti Airfield, Nanumea Airfield and Nukufetau Airfield. The 45th Fighter Squadron operated P-40Ns from Nanumea and Marine Attack Squadron 331 (VMA-331) operated Douglas SBD Dauntless dive bombers from Nanumea and Nukufetau.