7th Armoured Division was next in action at the Battle of Medenine on 6 March when the Axis forces attempted to disrupt Eighth Army's preparations to break through the Mareth Line into Tunisia. It also played a minor role in reserve during the Battle of Mareth (16–23 March), and in the pursuit after the Battle of Wadi Akarit (6–7 April). There was little interference from the "Luftwaffe", which had been forced to evacuate its forward airfields. 7th Armoured Division provided a flank guard during the fighting at Enfidaville (19–29 April). In the rough country of Tunisia the forward LAA units were often involved in 'snap' engagements against fast, low-flying air attacks. Increasingly, they discarded the LAA No 3 Kerrison Predictor and employed the simple 'Stiffkey Stick' deflection sight for the Bofors.