The title Anzac indicated its composite Australian and New Zealand nature and as such was possibly the first official use of this term for this purpose, rather than as a designation for an army corps.
During the Sinai campaign, the Australian 3rd Light Horse Brigade was also part of the division before moving to the Imperial Mounted Division (which was subsequently retitled the Australian Mounted Division). During 1917 the British 22nd Mounted (Yeomanry) Brigade was attached to the division.
ANZAC The Australian and New Zealand Army Corps was a First World War army corps of the Mediterranean Expeditionary Force that was formed in Egypt in 1915 and operated during the Battle of Gallipoli.
I Anzac The I Anzac Corps was an Australian and New ZealandWorld War I army corps formed in Egypt in February 1916 as part of the reorganization of the Australian Imperial Force following the evacuation of Gallipoli in November 1915.
The division contained three or four mountedbrigadesBrigade is a term from military science which refers to a group of several battalions (typically two to four), and directly attached supporting units (normally including at least an artillery battery and additional logistic support).
The AnzacMountedDivision (originally the Australian and New ZealandMountedDivision) was also formed at this time and contained the three Australian light horsebrigades as well as the New ZealandMounted Rifles Brigade.
The division fought as mountedinfantry throughout the Middle East, including Egypt, the Sinai (Romani, Magdhaba and Rafa) and Palestine (First and Second battles of Gaza, Beersheba, Jerusalem, Jericho, Es Salt, Megiddo and Amman) and Syria.
Australian and New ZealandDivisions were involved in a number of engagements during the Battle of the Somme (1916) while components of British corps but it was only during the Battle of Pozieres, 23rd July 1916, that an Anzac formation participated as a whole.