The 3rd Light Horse Regiment was a mounted infantry regiment of the Australian Army during the First World War. The regiment was raised in September 1914, and by December as part of the 1st Light Horse Brigade had moved overseas. The regiment only fought against the forces of the Ottoman Empire, in Egypt, at Gallipoli, on the Sinai Peninsula, and in Palestine and Jordan. After the armistice the regiment eventually returned to Australia in March 1919. For its role in the war the regiment was awarded nineteen battle honours. During the inter-war years, the regiment was re-raised as a part-time unit based in the state of South Australia. It was later converted to a reconnaissance squadron during the Second World War but was disbanded in early 1943 without having been deployed overseas. In the post war period, the regiment was re-raised as an amalgamated unit, designated the 3rd/9th Light Horse, which is currently part of the Australian Army Reserve.
In October 1914, the regiment left Australia, bound for the Middle East. After arriving in Egypt in December, they took part in the North African campaign defending the Suez Canal. They remained there until May 1915, when they left for the Gallipoli campaign with the Australian and New Zealand Army Corps. The regiment left their horses in Egypt, and arrived at the Gallipoli peninsula on 12 May 1915. Here regiment fought in the Landing at Anzac Cove, and the Battle of Sari Bair, but spent most of the campaign in a defensive posture. The regiment left Gallipoli for Egypt in December 1915, by which time they had earned four battle honours.
In 1921, the decision was made to perpetuate the honours and traditions of the AIF by reorganising the units of the Citizens Force to replicate the numerical designations of their related AIF units. As a result, the 3rd Light Horse was re-raised as a part-time unit based in the 4th Military District, which encompassed the state of South Australia and part of New South Wales. Adopting the designation of the "South Australian Mounted Rifles", it assumed the lineage of several previously existing militia units, including the 22nd Light Horse that had been formed in 1912. This unit traced its lineage back to the 16th Australian Light Horse Regiment, which had been formed in 1903 as part of the amalgamation of Australia's colonial forces into the Australian Army after Federation. At the outbreak of the Second World War, the 3rd Light Horse was assigned to the 4th Cavalry Brigade, which was part of the 1st Cavalry Division. In December 1941, the regiment was re-organised as a reconnaissance company, adopting the designation of the 3rd Reconnaissance Company. For a brief period in 1942, it assumed the designation of the 3rd Motor Regiment, although this was changed in May 1942 to the 3rd Reconnaissance Squadron. In early 1943, as the Australian Army undertook a partial demobilisation, the unit was deemed surplus to requirements and was disbanded without having seen operational service during the war. In the post war period, the regiment was re-raised in 1948 equipped with armoured cars. It was initially designated the 3rd Reconnaissance Regiment, but the following year it was amalgamated with the 9th Light Horse and re-designated the 3rd/9th Light Horse. The 3rd/9th remains part of the Australian Army Reserve and is currently part of the 2nd Division.
Commanding officers
The following officers commanded the 3rd Light Horse Regiment during the First World War:
The 3rd Light Horse Regiment was awarded the following battle honours:
ANZACDefence at ANZACSuvlaSari BairGallipoli 1915–1916Egypt 1915–1917RomaniMagdhaba-RafahGaza-BeershebaEl MugharJerusalemJaffaJerichoJordan Jordan MegiddoNablusPalestine 1917–1918