The Regiment was raised as a machine gun regiment in Bloemfontein and its surrounding districts in the Orange Free State on 1 April 1934. Lieutenant-Colonel McHardy was the Regiment's first commanding officer.
The Regiment arrived in Egypt in June 1941, as the Machine Gun Battalion of the South African 1st Infantry Division. The regiment saw a lot of action in the north African desert, most notably at Sidi Rezegh, where its 3rd Company went into action with 4 officers, 117 other ranks and 25 "natives", of whom only 1 officer, 44 other ranks and 9 "natives" survived. At the end of 1941 the regiment was made part of the 5th South African Infantry Brigade. In March of the same year additional personnel was received from the 3rd battalion of the Transvaal Scottish Regiment and in April Lieutenant-Colonel W. P. Minnaar succeeded McHardy as its commanding officer. Minnaar commanded the regiment during the El Alamein fighting in June. In January 1943 the unit was sent back to the then-Union of South Africa and placed under the command of Lieutenant-Colonel A. S. Nel, who became the commanding officer of the amalgamated Regiment Botha/President Steyn in August of the same year. The unit was later converted to an armoured car regiment.
Post War Years
From 1960 to 1966, RPS was called Regiment Bloemfontein.
Under 7th Division">7 South African Infantry Division">7th Division
The Regiment's first active duty as a tank unit was when two squadrons took part in Operation Packer in March 1988 with 82 Brigade. The unit lost three tanks in a Cuban minefield. One of the tanks was recovered while the other two remained stuck in the minefield. The commander moved his forces back out of the minefield as they attempted to retrieve the damaged tanks. By 14h30 a decision was made to withdraw altogether due to the minefields and heavy artillery attacks from both sides of the river. A request was made for the SADF artillery to destroy the three damaged Olifant tanks. This was rejected as it was believed that the tanks could be recovered. This did not happen; one was retrieved by the Cubans and taken to the town of Cuito Cuanavale while the other remains to this day in the Angolan bush.
SANDF era
Name Change
In August 2019 52 units of the Reserve Force had their names to reflect the diversity of the current SANDF. This unit had its name changed to the Thaba Bosiu Armour Regiment.
Regimental symbols
Regimental Colour: The badge is a Vickers machine gun with the arms of the late President Steyn and Floreat above it and the title and Bloemfontein below. The flash is yellow above white with black as the lowest panel, and a black triangle on the centre white.
Previous Dress Insignia
Unit colours
The Regiment's first Unit Colour was a gift from the City Council of Bloemfontein and the wife of the late President M.T. Steyn presented it to the Unit on 17 October 1939. The RPS also became the first unit to receive the Right to the Freedom of Entry to the City of Bloemfontein. The date of this honour was 1 April 1955.