No. 8 Group was a Royal Air Force group which existed during the final year of the First World War and during the Second World War. First World War No. 8 Group was formed in April 1918 as a training unit and designated 8 Group (Training). It remained in this function throughout the rest of the war and was disbanded in May 1919. Second World War First formation The Group was re-established as No 8 (Bomber) Group on 1 September 1941 only to be disbanded around five months later on 28 January 1942. Reformation of Group 8 8 Group was re-constituted when Bomber Command's Pathfinder Force was renamed No. 8 (Pathfinder Force) Group on 8 January 1943. The group consisted of specialist squadrons that marked targets for the main attacks of Bomber Command aircraft. The Force, which had been formed in August 1942 with five Squadrons from the existing Bomber Command Groups flying a mix of Short Stirlings, Handley Page Halifaxes, Avro Lancasters and Vickers Wellingtons. When new aircraft, such as the de Havilland Mosquito became available, 8 Group got the first ones. Its aircraft used navigation aids such as Gee, H2S and Oboe to find the targets of attack more accurately than the main force on its own could. Initially five squadrons, 8 Group ultimately grew to a strength of 19 squadrons. No. 8 Group was also responsible for the Light Night Striking Force, equipped with Mosquito bombers and used for harassing raids on Germany. It was disbanded on 15 December 1945, though its badge and motto ("We Guide to Strike") were subsequently authorized on 11 March 1953. While the majority of Pathfinder squadrons and personnel were from the Royal Air Force, the group also included many from the air forces of other Commonwealth countries. The PFF flew a total of 50,490 individual sorties against some 3,440 targets. The cost in human lives was grievous. At least 3,727 members were killed on operations and 675 aircraft lost. Structure February 1943 No. 7 Squadron RAF at RAF Oakington with the Short Stirling I No. 35 Squadron RAF at RAF Graveley with the Handley Page Halifax II No. 83 Squadron RAF at RAF Wyton with the Avro Lancaster I, III No. 109 Squadron RAF at RAF Wyton with the de Havilland Mosquito IV No. 156 Squadron RAF at RAF Warboys with the Vickers Wellington III & Avro Lancaster I, III February