When the Royal Scots had entered the eastern section of the El Arish Redoubt during the second phase of the attack, the western half was still held by Ottoman defenders. These defences became the objectives of the attacks by the 161st and 163rd Brigades of the 54th (East Anglian) Division, supported by four tanksincluding the two which had passed through the El Arish redoubt. On the right of the 163rd Brigade's advance, the 1/5th Battalion, The Suffolk Regiment moved towards the Ottoman trenches following a creeping barrage to attack and over–run the western El Arish trenches during hand–to–hand fighting when the 1/5th Battalion, The Suffolk Regiment suffered light casualties. Although they had captured the third line, part of this captured territory had to be abandoned because it was exposed to hostile fire, so they consolidated their position along the second line. Half of the 1/8th Battalion, Hampshire Regiment attacked Burj Trench while the other half attacked Triangle Trench, although it was not their objective. This caused some confusion, and the 1/4th and 1/5th Battalions, The Norfolk Regiment lost direction in the dust and smoke of the cloudy, hazy night. As a result, only small numbers reached Gibraltar and Crested Rock, from where they were quickly forced to withdraw.