Jacobus Theron, a British subject, joined the invading Boer Forces under Gen. Manie Maritz in the Calvinia district, Cape Colony, on 10 September 1901.
On Vorm “B” he also listed his unit as Calvinia Commando. He served till the end of the war. Theron appeared in Court at Calvinia on 16 July 1902, charged under Proclamation 100 of 1902. Because there were no other charges against him (e.g. theft, looting, etc.), he, in common with the greater majority of Cape Rebels, was disfranchised and also sentenced to be detained till adjournment of the court.
Full details of the extensive war-time Rebel activities in the NW Cape Colony and the subsequent treatment of the rebels can be found in a 650 p. publication Die Kaapse Rebelle van die Hantam-Karoo by Eben Nel.