'Hengeist' was a British tactical deception in North-West Africa, and was designed to persuade the Germans that Major General C. F. Keightley’s 6th Armoured Division, which was to attack at Fondouk, would in fact fall on an area farther to the south and advance toward Sfax (early April 1943).
The division’s camouflaged approach toward the Fondouk was effectively overshadowed by the movement, farther to the south of columns of dummy tanks and other tanks, together with small numbers of real tanks, and the entire undertaking also made extensive use of radio deception.