51st (H) Division then took part in the pursuit to El Agheila and Tripoli in January 1943. By 25 February it was past Medenine in Tunisia and facing the Mareth Line. The Axis force made a spoiling attack on 6 March (the Battle of Medenine) but there was plenty of warning and the advance was easily repulsed. 51st (H) Division had already moved most of its artillery south in waiting for the attack, leaving three Troops to move and fire between various positions to simulate the whole divisional artillery remaining in its old positions.