The 4th Mounted Rifles was formed on March 17, 1911. They were mobilised during World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 and formed part of the Auckland Mounted Rifle Regiment

Auckland Mounted Rifle Regiment

The Auckland Mounted Rifle Regiment was a New Zealand Mounted Regiment formed for service during World War I. It was formed from units of the Territorial Foirce consisting of the 3rd Mounted Rifles the 4th Mounted Rifles and the 11th Mounted Rifles.They served in the Middle Eastern theatre of...

, and served in the Middle Eastern theatre of World War I

Middle Eastern theatre of World War I

The Middle Eastern theatre of World War I was the scene of action between 29 October 1914, and 30 October 1918. The combatants were the Ottoman Empire, with some assistance from the other Central Powers, and primarily the British and the Russians among the Allies of World War I...

 and first saw action during the Battle of Gallipoli

Battle of Gallipoli

The Gallipoli Campaign, also known as the Dardanelles Campaign or the Battle of Gallipoli, took place at the peninsula of Gallipoli in the Ottoman Empire between 25 April 1915 and 9 January 1916, during the First World War...

.
As a part of the larger New Zealand Mounted Rifles Brigade

New Zealand Mounted Rifles Brigade

The New Zealand Mounted Rifles Brigade, consisting usually of four units of mounted infantry, fought in World War I and World War II. Initially a milita, under the instruction of Lieutenant Colonel Joseph Henry Banks they formed the core of the New Zealand Army following successful service in the...

 (of the Anzac Mounted Division

Anzac Mounted Division

The ANZAC Mounted Division was a mounted infantry and mounted rifles division formed in March 1916 in Egypt during World War I following the Battle of Gallipoli when the Australian and New Zealand regiments returned from fighting dismounted as infantry...

) they went on to serve in the Sinai and Palestine Campaign

Sinai and Palestine Campaign

The Sinai and Palestine Campaigns took place in the Middle Eastern Theatre of World War I. A series of battles were fought between British Empire, German Empire and Ottoman Empire forces from 26 January 1915 to 31 October 1918, when the Armistice of Mudros was signed between the Ottoman Empire and...

.

Great War Battles

• Battle of Gallipoli
  Battle of Gallipoli
  The Gallipoli Campaign, also known as the Dardanelles Campaign or the Battle of Gallipoli, took place at the peninsula of Gallipoli in the Ottoman Empire between 25 April 1915 and 9 January 1916, during the First World War...
  
  
• Battle of Romani
  Battle of Romani
  The Battle of Romani was fought east of the Suez Canal, near the Egyptian town of Romani and the site of ancient Pelusium on the Sinai Peninsula during the First World War...
  
  
• Battle of Magdhaba
  Battle of Magdhaba
  The Battle of Magdhaba took place on 23 December 1916 south and east of Bir Lahfan in the Sinai desert, some inland from the Mediterranean coast and the town of El Arish...
  
  
• Battle of Rafa
  Battle of Rafa
  The Battle of Rafa took place on 9 January 1917 at el Magruntein to the south of Rafa, close to the frontier between the Sultanate of Egypt's Sinai Peninsula and the Ottoman Empire, and in the area to the north and east of Sheikh Zowaiid...
  
  
• First Battle of Gaza
  First Battle of Gaza
  The First Battle of Gaza was fought in and around the town of Gaza on the Mediterranean coast in the southern region of Ottoman Palestine on 26 March 1917, during World War I...
  
  
• Second Battle of Gaza
  Second Battle of Gaza
  The Second Battle of Gaza, fought in southern Palestine during the First World War, was another attempt mounted by British Empire forces to break Ottoman defences along the Gaza-Beersheba line...
  
  
• Third Battle of Gaza
  Third Battle of Gaza
  The Third Battle of Gaza was fought in 1917 in southern Palestine during the First World War. The British Empire forces under the command of General Edmund Allenby successfully broke the Ottoman defensive Gaza-Beersheba line...
  
  
• Battle of Beersheba
• Battle of Megiddo (1918)
  Battle of Megiddo (1918)
  The Battle of Megiddo took place between 19 September and 1 October 1918, in what was then the northern part of Ottoman Palestine and parts of present-day Syria and Jordan...
  
  

Between the Wars

They were renamed the 4th New Zealand Mounted Rifles (Waikato) in 1921 and later still Waikato Mounted Rifles

Waikato Mounted Rifles

The Waikato Mounted Rifles is an armoured regiment of the New Zealand Army, part of the Royal New Zealand Armoured Corps. The unit is a single squadron within the Territorial Force that serves in the armoured reconnaissance role. Squadron Headquarters is located at 106 Rostrevor Street, PO Box 212,...

, which was absorbed into the 1st Armoured Regiment, on the 29 March 1944.