In that case, you may need to amend your public family tree , reference his service during the Boer War. Trooper J Kerruish 17th Lancers regimental number 4950 served in the same regiment during WW1...See attached medal roll for 1914
You only live once, but if you do it right, once is enough.
This certainly needs sorting; my great uncle definitely died in Grote Schuur Hospital Western Cape, so we have a clash of timings, it may be that he was invalided out and so made his way back to SA. his son Jack was too young to serve in WW1. and in any case would not have the same service number, I have a tangled knot to sort.