Operation Flax was a Western Allied air operation executed during the Battle of Tunisia and North African Campaign of the Second World War. The operation was designed to cut the air supply lines between Italy and the Axis armies in Tunis, Tunisia, in April 1943. The parallel Allied naval effort was Operation Retribution.In November 1942, American and British forces landed in North Africa under Operation Torch. Allied thrusts overran Vichy French Morocco and Algeria and advanced into Tunisia.