initially in Britain and with the Desert Air Force located in North Africa and the Mediterranean. Thousands of Australians also served with other Commonwealth air forces in Europe during the Second World War. About nine percent of the personnel who served under British RAF commands in Europe and the Mediterranean were RAAF personnel. With British manufacturing targeted by the German Luftwaffe, in 1941 the Australian government created the Department of Aircraft Production (DAP; later known as the Government Aircraft Factories) to supply Commonwealth air forces, and the RAAF was eventually provided with large numbers of locally built versions of British designs such as the DAP Beaufort torpedo bomber, Beaufighters and Mosquitos, as well as other types such as Wirraways, Boomerangs, and Mustangs. In the European theatre of the war, RAAF personnel were especially notable in RAF Bomber Command: although they represented just two percent of all Australian enlistments during the war, they accounted for almost twenty percent of those killed in action. This statistic is further illustrated by the fact that No. 460 Squadron RAAF, mostly flying Avro Lancasters, had an official establishment of about 200 aircrew and yet had 1,018 combat deaths. The squadron was therefore effectively wiped out five times over. Total RAAF casualties in Europe were 5,488 killed or missing. Pacific War The beginning of the Pacific War—and the rapid advance of Japanese forces—threatened the Australian mainland for the first time in its history. The RAAF was quite unprepared for the emergency, and initially had negligible forces available for service in the Pacific. In 1941 and early 1942, many RAAF airmen, including Nos. 1, 8, 21 and 453 Squadrons, saw action with the RAF Far East Command in the Malayan, Singapore and Dutch East Indies campaigns. Equipped with aircraft such as the Brewster Buffalo, and Lockheed Hudsons, the Australian squadrons suffered heavily against Japanese Zeros. During the fighting for Rabaul in early 1942, No. 24 Squadron RAAF fought a brief, but ultimately futile defence as the Japanese advanced south towards Australia. The devastating air raids on Darwin on 19 February 1942 increased concerns about the direct threat facing Australia. In response, some RAAF squadrons were transferred from the northern hemisphere—although a substantial number remained there until the end of the war. Shortages of fighter and ground attack planes led to the acquisition of US-built Curtiss P-40 Kittyhawks and the rapid design and manufacture of the first Australian