No. 138 Squadron RAF

No. 138 Squadron RAF was a squadron of the Royal Air Force that served in a variety of roles during its career, last disbanded in 1962. It was the first 'V-bomber' squadron of the RAF, flying the Vickers Valiant between 1955 and 1962.

Formation in World War I as fighter squadron
No. 138 Squadron RAF was originally to be formed as a fighter unit on 1 May 1918, but formation was suspended until officially formed on 30 September 1918 as a fighter-reconnaissance squadron at Chingford, and was disbanded there on 1 February 1919.

Special Duties in World War II
During World War II, it was reformed in 1941, from the expansion of No. 1419 Flight, and was the first squadron of the Royal Air Force Special Duty Service. In February 1942 the squadron's Lysander flight and a number of its Whitleys were hived off to make the nucleus of 161 (Special Duty) Squadron. Based initially at RAF Stradishall, in March 1942, 138 Squadron moved to its permanent home at the clandestine airfield at RAF Tempsford. The squadron dropped supplies and agents for the SIS and the SOE to Axis occupied territory. From October 1941 there served several all-Polish volunteer crews. Between 1 April 1943 and November 1943 the squadron included Polish Special Duties Flight, as C Flight. It carried out this role until March 1945 when it was reassigned to Bomber Command, operating under No. 3 Group. It was disbanded on 1 September 1950.

V-Bomber squadron post-war
On 1 January 1955 the squadron was reformed as the first squadron to be equipped with the Vickers Valiant strategic nuclear bomber, based at RAF Gaydon and later moving to RAF Wittering. It flew them from Malta during the Suez Crisis of October 1956, and was finally disbanded on 1 April 1962.