1 South African Infantry Battalion is a mechanized infantry unit of the South African Army.

With its establishment as 1 SA Infantry Training Battalion at Oudtshoorn on 26 January 1951, the unit became part of the infantry corps.

In 1953, the unit consisted of:

and

The unit was reconstituted as 1 SA Infantry Battalion in November 1967 and moved to its current base at Tempe near Bloemfontein, in November 1973.

By 1976, infantry operations had transformed drastically when the Ratel Infantry Fighting Vehicle (IFV) was introduced, with the first Ratel course presented by then Major Roland de Vries in November at 1 SAI.

In 1977, 1 SAI received its first consignment of 42 Ratel IFVs, along with a redesigned shoulder flash, depicting a wild honey badger.

For the next four years, mechanised infantry leadership students shared the same lines as 1 SAI's conventional companies, but were required to wear a nutria brassard on the right arm with a green and yellow embroidered honey badger insignia in order to stand out and ensure Espirit de Corps. The training wing, identified as the T&D Wing, was where all students attended the same course until the Section Leaders Phase had been completed, where they were then awarded their Lance Corporal stripes and then placed with regular rifle companies. The rest of the future NCOs also received their stripes and future Officers received their white Candidate Officer's tabs. These students were then evaluated and split into the Mechanised Platoon Commanders Course and Specialist Instructors Course. These platoon commanders were destined to either become future leaders of 1 SAIs rifle companies or instructors at the Training Wing, while the Specialist Instructors would become Officers and NCOs responsible for training Ratel gunners and drivers. The Platoon NCOs were responsible for the support of the vehicles, platoon weapons and signal equipment of a specific platoon. Platoon sergeants were responsible for the training and discipline of an allocated platoon.