 Chauvel deployed the Anzac Mounted Division for the advance , with the New Zealand Mounted Rifles Brigade in the centre following the telegraph line . On their right , with a gap of 1 mile ( 1 @.@ 6 km ) , was the 3rd Light Horse Brigade , which was in touch with a small flying column ; the Mobile Column of the City of London Yeomanry , 11th Light Horse Regiments and the Imperial Camel Brigade , which was to again attempt to get round the German and Ottoman left flank and cut off their retreat . The advance of the 3rd Light Horse and the New Zealand Mounted Brigades from Oghratina to Bir el Abd was to begin at daylight on 9 August , with the 5th Mounted Brigade forming the reserve . On the left of the New Zealanders , Royston 's Column ; a composite of the depleted 1st and 2nd Light Horse Brigades , had gone to Katia to water and had then march through the night to the Hod <unk> 4 miles ( 6 @.@ 4 km ) north @-@ west of Bir el Abd , where they arrived at 03 : 00 on 9 August . They were to <unk> for one and a half hours before advancing to a point 2 miles ( 3 @.@ 2 km ) north @-@ east of Bir el Abd , to cooperate with the New Zealand Mounted Rifles Brigade 's attack on the rearguard position at 06 : 30 . Since the attack , supported by only four horse artillery batteries , was on a prepared position held in superior strength , strong in machine guns , and covered by double the number of guns , including heavy howitzers , it was something of a <unk> . The attacking force 's only advantage was its mobility . 
