On 25 March, the Anzac Mounted Division moved out of their bivouacs in two columns. The first column, consisting of the New Zealand Mounted Rifles and the 22nd Mounted Yeomanry Brigades, marched up the beach from Bir Abu Shunnar at 02:30, to establish a line just south of the Wadi Ghuzzeh. This advance was to cover reconnaissances of the Wadi Ghuzzeh, which would search for the best places to cross this deep, dry, and formidable obstacle, for both infantry and mounted troops as they advanced towards Gaza. The second column, consisting of Anzac Mounted Division's divisional headquarters, Signal Squadron, Field Artillery, and the 2nd Light Horse Brigade (forming divisional reserve), arrived southwest of Deir el Belah. Here the 2nd Light Horse Brigade and the artillery were ordered to water and bivouac at Deir el Belah. By 10:00, Chauvel's Anzac Mounted Division's headquarters and Chetwode's Desert Column headquarters had been established on Hill 310.