3rd / 9th Light Horse ( South Australian Mounted Rifles ) The 3rd / 9th Light Horse ( South Australian Mounted Rifles ) ( 3 / 9 SAMR ) is a Reserve light cavalry regiment of the Australian Army based in Adelaide . Part of the Royal Australian Armoured Corps ( RAAC ) , the regiment is attached to the 9th Brigade , 2nd Division and currently operates Land Rover four wheel drive vehicles . History . In 1948 , following the completion of the demobilisation process after the end of the Second World War , the Citizens Military Force — Australia ' s part - time volunteer army — was reformed , albeit on a reduced scale . At this time , the 3rd / 9th Light Horse ( South Australian Mounted Rifles ) was formed in Adelaide in order to perpetuate four previously existing South Australian light horse regiments , the 3rd , 9th , 18th and 23rd Light Horse Regiments . These units trace their lineage back to a volunteer cavalry unit formed in Adelaide in 1840 . After contributing personnel to fight in the Second Boer War as part of the South Australian Bushman ' s Contingent , over time this unit was expanded into two regiments , the 16th and 17th Light Horse Regiments which were again re - organised upon the outbreak of the First World War to form the 3rd and 9th Light Horse Regiments . During the war , these two regiments fought at Gallipoli as dismounted infantry , before taking part in the Sinai and Palestine campaign during which the 9th Light Horse had the honour of being the only Australian unit to capture an enemy unit ' s battle standard , capturing the Turkish 46th Regiment ' s standard in 1918 . 3 / 9 SAMR is also historical custodian for the 2 / 9th Armoured Regiment and carries their battle honours on the Guidon of the 9th LHR . The 2 / 9th Armoured Regiment was raised in August , as part of the division ’ s 2nd Armoured Brigade . The 2 / 9th was to take part in the Operation Oboe Six operations , a series of amphibious landings designed to reoccupy areas of the Borneo and the Netherlands East Indies . The regiment would support the 9th Division landings at Tarakan , and then Labuan and Brunei Bay , in British North Borneo . The 2 / 9th Armoured Regiment remained on Borneo until the end of December , when it returned to Australia and was disbanded at the start of 1946 . Upon re - establishment in 1948 they adopted the Staghound armoured car , which it operated until 1956 . At this time , the Australian Army , following the British Army ' s lead , decided that armoured units would be tasked with anti - tank defence . As a result of this , the regiment was converted to an anti - tank regiment , equipped with Land Rover four wheel drives and 6 - pounder static and towed 17 - pounder anti - tank guns . This was only short - lived , however . In 1957 , amidst widescale cutbacks in the RAAC , the regiment was close to disbandment . In order to save it from extinction , it was converted to an armoured reinforcement group , however , it never trained in this role and in 1960 , when the Army adopted the Pentropic organisation , it reverted to the anti - tank role . After the abandonment of the Pentropic organisation in 1965 , the regiment converted to the cavalry role , equipped with Staghounds , Ferret scout cars and Saracen armoured personnel carriers . In 1976 the regiment was reduced to a Squadron and was equipped with the M113 Armoured Personnel Carrier , which it operated in the armoured reconnaissance role . In 2006 , the regiment converted from the armoured personnel carrier to the light cavalry role ; in doing so it handed back its M113 APCs and began operating Land Rover four and six wheel drives . Battle honours . The 3rd / 9th Light Horse ( South Australian Mounted Rifles ) perpetuates the following battle honour s from its predecessor units :