A first hand account? the date, location & circumstances match.
Cpl. James Pearce Rogers, No.10219, R.A.M.C. was one of four constables serving in the City of Chester Police Force who being Army Reservists were mobilised during October 1899. James Rogers was a keen writer and the times being prior to press censorship about half a dozen of his private letters were published in full by the local Chester newspapers.
An extract from the Cheshire Observer, Saturday 10th March 1900 entitled THE CHESTER POLICEMEN AT THE FRONT. THRILLING EXPERIENCE.
The Chief Constable of Chester (Mr. J. H. Leybourne) has received another letter from James Rogers, late of the Chester Police Force, and who is with the R.A.M.C. It is as follows:
Spearman's Farm, Acton Homes, South Africa, dated February 4th, 1900.
… Of my comrades experiences, I know very little, but I have had some thrilling experiences such as I wish never to have again. I have witnessed awful scenes of destruction, men and horses being blown to bits, and I have had many narrow escapes. One day I was carrying a wounded officer of the Inniskilling Fusiliers down a kopje, when I missed my footing and fell over a rock. The poor fellow, who was shot in the chest (the bullet having made its exit through his loins) did not complain, however, although I must have caused him a great deal of pain. He said "All right, Orderly, I know you could not help it." He died of his wounds three or four days ago…
The memorial states Captain Maclachlan was wounded on 20th January – this source has a day later:
The Royal Inniskilling Fusiliers: Being the History of Regiment from December 1688 to July 1914, page 420. Spurs between Bastion and Three Tree Hills - Captain Maclachlan was mortally wounded on the 21st January 1900.