On 28 May 1945, authority was granted for the formation of 4 Field Artillery as a full-time regiment with effect 1 April 1945.

4 Artillery was the successor to 4 Field Brigade, which had made a name for itself at Combolcia, Dessie and Amba Alagi in Ethiopia.

In 1989, the regiment was part of the Merlyn Brigade based at Grootfontein, returning home after Namibian independence.

In 1985 and 1986 the unit had tours as provisional infantry in Soweto, Tembisa, Alexandra and in the KwaNdebele homeland.

This includes three commanding officers, two second-in-commands and at least one Battery Sgt Major.