During this time, the infantry attack on Gaza by the 53rd (Welsh) Division had been progressing. By 13:30, the 160th (Welsh Border) Brigade on the left had advanced rapidly to capture the Labyrinth, a maze of entrenched gardens due south of Gaza. Their 2/10th Middlesex Regiment established themselves on a grassy hill, while their 1/4th Royal Sussex Regiment advanced up the centre of the Es Sire ridge under intense hostile fire, suffering heavy casualties including their commanding officer. Having reached the crest, they were forced to fall back in some disorder by the Ottoman defenders. However, after being reinforced at 16:00 they recommenced their advance. On the right the 158th (North Wales) Brigade's 1/5th Royal Welsh Fusiliers battalion reached the cactus hedges south of Ali Muntar, where they paused to wait for supporting battalions to come up on their right. Along with the 159th (Cheshire) Brigade, these two brigades slowly fought their way forward towards Clay Hill. Meanwhile, Dallas ordered the 161st (Essex) Brigade of the 54th (East Anglian) Division to capture Green Hill and fill the gap between the 158th (North Wales) and 160th (Welsh Border) Brigades (53rd Division). By 15:30 the 161st (Essex) Brigade had reached Mansura and they were in a position to launch their attack at 16:00 with the arrival of the 271st Brigade RFA. The fire from this artillery brigade dampened the hostile machine gun fire from Clay Hill, and at 15:50, 45 minutes after the 161st (Essex) Brigade joined the battle, the infantry succeeded in entering the defenders' trenches. They entered at two places to the east of the Ali Muntar mosque, capturing 20 German and Austrian soldiers and another 20 Ottoman soldiers. The 53rd (Welsh) Division reported the successful capture of Clay Hill, located within of Ali Muntar, at 16:45.