In the mission, codenamed Operation Typical, six soldiers flew from Derna airfield on 27 May 27, 1943 and parachuted to Black Lake in Montenegro at the height of the German offensive known as Case Black (“Operation Schwarz”) whose objective was to destroy the partisan forces. The group was led by Colonel William Deakin and Captain William F Stuart, together with two radio operators, Walter Wroughton and Rosenberg.