[10] On 18 January 1941 HM King George VI and his consort Queen Elizabeth visited the squadron at East Wretham.

Then it ran low on fuel, its commander Pilot Officer František Cigoš mistakenly judged that they were over England and he landed at Flers in northern France.

[23] This could carry two torpedoes or 3,999 lb (1,814 kg) of bombs but it was primarily a Bomber Command variant, not designed for maritime patrol work.

[27] On 21 August 1943 the squadron began maritime patrols with Liberator GR Mk V aircraft and continued anti-submarine work but now over the Bay of Biscay.

[28] On 27 December 1943 Liberator BZ796/H, led by Pilot Officer Oldřich Doležal, attacked the German blockade runner Alsterufer in the Bay of Biscay.

Doležal's crew set the cargo ship on fire with five RPs and a 500 lb (230 kg) bomb and she sank the next day.

On 24 June Liberator FL961/O led by Flying Officer Jan Vella, along with the Tribal-class destroyers HMS Eskimo and HMCS Haida, attacked and sank U-971 just west of the English Channel.

[31][32] On 7 August 1944 the squadron transferred to RAF Tain in Scotland and its area of operations changed from the Bay of Biscay and Western Approaches to the North Sea.

[36] On 27 October Fleet Air Arm aircraft from HMS Implacable damaged U-1060, forcing her to run aground on the coast of German-occupied Norway.

[37] In February 1945 the squadron was re-equipped, this time with Liberator C Mk VI aircraft that carried anti-submarine Leigh Lights.

One prisoner, Pilot Officer Arnošt Valenta, was murdered by the Gestapo in March 1944 for taking part in the Great Escape from Stalag Luft III.

[41] After the End of World War II in Europe, on 26 May 1945 the Czechoslovak government-in-exile formed the Letecká dopravní skupina ("Air Transport Group"), and recruited most of its personnel from 311 Squadron.

[42] By October the Letecká dopravní skupina had also acquired a number of Siebel Si 204D aircraft seized from Germany as war reparations.

It too flew transport flights to Ruzyně Airport, the first being on 30 July from RAF Manston in Kent, where the squadron was based from 3 August.

[46] Czechoslovak runways were found to be unsuitable for Liberators and in December 1945 all those of 311 squadron were returned to Britain landing at RAF Valley in Wales.

Letecký pluk 24 was given the name Biskajsky ("Biscay") and initially equipped with de Havilland Mosquito FB Mk VI fighter-bombers.

[5][50] On 18 October 1942 Wellington 1C aircraft of 311 Squadron crashed and burst into flames at South Ruislip, Middlesex, on approach to RAF Northolt.

[54][55][56] On 8 October 1945 a Liberator GR.VI aircraft of 311 Squadron suffered an engine fire, crashed and burst into flames[43] in a field at Elvetham, near Hartley Wintney, Hampshire.

[57][58] In 1964, 311 Squadron veteran Richard Husmann, writing as Filip Jánský, published his novel Nebeští jezdci, portraying the lives of Czech and Polish airmen in the wartime RAF.