[1][2][3] 4 SAI was established on 1 January 1962, at Voortrekkerhoogte in Pretoria, but within a month was moved to Middelburg, South Africa.

[4] 4 SAI also supported the signing of the Nkomati accord between South Africa and Mozambique in March 1984 and took part in Exercise Thunder Chariot in September of that year.

The exercise was, at the time, billed as the largest mobilisation of South African forces since World War II.

SANDF's Motorised Infantry is transported mostly by Samil trucks, Mamba APC's or other un-protected motor vehicles.

Samil trucks are all-wheel drive, in order to have vehicles that function reliably in extremes of weather and terrain.