Dallas' orders were handed to the Anzac, Imperial Mounted, and the 54th (East Anglian) Divisions' commanders at 17:00 on 25 March. The 53rd (Welsh) Division's 158th (North Wales) and 160th (Welsh Border) Brigades were to begin crossing the Wadi Ghuzzeh at 03:30 and advance up the Burjabye and Es Sire ridges, while the 159th (Cheshire) Brigade which followed the 158th (North Wales) across the wadi, was to remain close to the wadi until further orders were received. Money's Detachment was to cross the wadi mouth and hold a position in the sand dunes between the Rafa-Gaza road and the sea to divert the Ottoman defenders' attention, and cover a section of the 15th Heavy Battery. A section of 91st Heavy Battery was to move into the wadi, while a section the 10th Heavy Battery of 60-pdrs was attached to the 160th Brigade Group. However, artillery ammunition was limited and was to mainly target the Labyrinth group of Ottoman defences. The mounted divisions were to isolate Gaza by stopping the Gaza garrison retiring, or any reinforcements from Huj and Hareira areas, attempting to reinforce Gaza. They were to pursue any hostile force that showed signs of retiring, and if necessary, support the main assault on Gaza, which was to be carried out by the 53rd (Welsh) Division. This division was to be reinforced if necessary by the 161st (Essex) Brigade of the 54th (East Anglian) Division. At 18:00 Murray, the commander in chief of the EEF, established his headquarters in the carriage of a railway train at El Arish.