In April 1949 Canada joined NATO, and as part of its military commitment established an Air Division (No. 1 Air Division) in Europe consisting of four wings. The first wing to form, No.1 Fighter Wing, was established at North Luffenham, England in 1951, but later moved to Marville, France. Other RCAF wings quickly followed, with bases established at Grostenquin, France; Zweibrücken, West Germany; and Baden-Soellingen, West Germany. Each of these wings consisted of three fighter squadrons. The backbone of RCAF support to NATO's air forces in Europe in the 1950s were the CF-100 and the Sabre. Until 1958 the RCAF also trained aircrew from other NATO countries under the NATO Air Training Plan.