The Battle of Wadi Akarit was an Allied attack from 6 to 7 April 1943, to dislodge Axis forces from positions along the Wadi Akarit in Tunisia during the Tunisia Campaign of the Second World War. The Gabès Gap, north of the towns of Gabès and El Hamma, is a passage between the sea and impassable salt marshes. The 51st (Highland) Infantry Division breached the defences and held a bridgehead, allowing the passage of their main force to roll up the Axis defences. After several determined counter-attacks, the Axis forces withdrew and the Eighth Army, under General Bernard Montgomery, pursued toward Tunis, until reaching Axis defensive positions at Enfidaville.

The 51st (Highland) Division was an infantry division of the British Army that fought on the Western Front in France during the First World War from 1915 to 1918. The division was raised in 1908, upon the creation of the Territorial Force, as the Highland Division and later 51st (Highland) Division from 1915. The division's insignia was a stylised 'HD' inside a red circle. Early doubts about the division's performance earned it the nickname of "Harper's Duds" after the name of its commander, Major-General George Harper although they would go on to gain a fearsome reputation with the Allies and Germans.