On 16 May 1864 the Umvoti Mounted Rifles was founded in Greytown as the Greytown Mounted Rifles. There were some 45 men in the original unit, under command of Capt A.S. Wyndham who was also the Magistrate of Greytown at the time. The Umvoti Mounted Rifles Hall is the oldest hall in Greytown. It was built in 1880 as a Masonic Hall, but later became the headquarters of the Regiment. It is currently used by the Greytown public works department. The Umvoti Mounted Rifles was formed in 1893 at Greytown, Natal by the redesignation of the left Wing of the Natal Carbineers. On 1 July 1913 the Regiment absorbed the Zululand Mounted Rifles, was redesignated the 4th Mounted Rifles and transferred to the Active Citizen Force of the Union Defence Force. In 1934 the Regiment was redesignated as the Umvoti Mounted Rifles and converted to infantry.
The UMR since 1920 served under command of the OC, Natal Command as firstly a Mounted Regiment on horseback and then, from 1935 as a motorised infantry unit. In September 1939 they were part of the 1st South African Brigade of the Natal Command. During the Second World War the Regiment served as an Infantry unit and in 1954 was converted to a Tank Regiment and subsequently in 1962 into an armoured car regiment.
In 1866 the first Regimental Colours of blue silk were presented to the Grey-town Mounted Rifles. In 1901 the regiment was again honoured by the presentation of colours by two Greytown ladies. In 1904 HRH Princess Helena, third daughter of Queen Victoria, presented the King's Colours to UMR. These have been consecrated and are housed in St James Church in Greytown for safekeeping. In 1964 the latest presentation of the Colours took place during the regiment's 100th birthday celebrations by Commandant-General P H Grobbelaar and incorporates the regimental badge in gold on a blue background which signi¬fies an armoured regiment.
National Colours
On July 14, 1990, National Colours were presented to the Regiment by Major General D J Mortimer.
Under the SANDF
In 1999, 84 SA Brigade was closed and the unit then fell under direct command of the South African Army Armoured Formation, and Umvoti Mounted Rifles was transferred to the new armoured 'type' formation, the South African Army Armoured Formation. The Regiment currently uses the Rooikat armoured fighting vehicle, equipped with a 76 mm quick-fire gun. In 2012 the long-awaited new history of the regiment, written by historian Mark Coghlan, was published by Just Done Productions Publishing.