I was reading the obituary of J J Collyer, CMR, who died in 1941.
What is strange is that Collyer was not, as far as I can see, engaged at Wepener. His QSA on WO100/241p3 lists the clasps CC, Tr and Witt.
This is confirmed by the 1905 Army List:
John (Jack) Collyer joined the CMR as trooper in 1899 and, as corporal, was recommended for a commission. He was commissioned in the CMR and appears on the rolls as Captain. He served under Smuts and rose to the rank of Major General.