'Rhubarb' (i) was the British overall designation for any short-range fighter-bomber sweep over part of German-occupied Europe and later over Germany (20 December 1940/May 1945).

The object was to harass German communications by destroying transport in target-of-opportunity attacks, to keep the German defences on a state of constant alert, and to destroy any German fighters sent up to intercept the raiders.

The first 'Rhubarb' mission was flown on 20 December 1940 by two Supermarine Spitfire fighters of No. 66 Squadron over France with a sortie against Le Touquet.