 Two and a half weeks later, on the evening of 8 January 1917 the mounted units of the Desert Column commanded by Chetwode rode out of El Arish towards Rafa where a 2,000-strong Turkish garrison was based.The attacking force comprised the Australian 1st Light Horse Brigade, 3rd Light Horse Brigade and the New Zealand Mounted Rifles Brigade of the Anzac Mounted Division under the command of Chauvel, the 5th Mounted Brigade and three battalions of the Imperial Camel Corps Brigade.After a long night march, the Egyptian Expeditionary Force attacked the strongly entrenched position at El Magruntein.