Operation Typical was the name of the first World War II British mission fully assigned to Yugoslav Partisans HQ and Marshall Tito organised by the Special Operations Executive (SOE). The six soldiers flew from Derna airfield on 27 May 1943 and parachuted to Black Lake in Montenegro at the height of a large German offensive Operation Schwarz which aimed to destroy the Partisan forces. The group was led by Col William Deakin and Capt William F Stuart, together with the two radio operators - Sergeants Walter Wroughton and . Canadian-Yugoslav Ivan ('John') Starčević acted as a translator and Sgt John Campbell (RM) was a cipher clerk, and bodyguard.