The newly formed 4th Light Horse Brigade, consisting of the 4th, 11th and 12th Light Horse Regiments, had taken the field on 17 April 1917, just before the second battle of Gaza.
Den nyformerede 4. lette beredne brigade, som bestod af 4., 11. og 12 lette beredne regiment var blevet sendt i felten den 17. april 1917, lige inden det andet slag om Gaza.