Here is Skinner himself playing it.

https://www.abdn.ac.uk/scottskinner/music/cd214a.mp3

I suspect the wobble at the end is a recording artifact.

The accompaniment is a stark sequence of unelaborated chords. Skinner liked his accompanists to keep it simple, and it certainly works here.

Redvers Buller was in overall command at the Battle of Magersfontein, where Macdonald was wounded and General Andrew Wauchope was killed (maybe the highest-ranking casualty of the Boer War). It wasn't exactly snatching defeat from the jaws of victory, but it wasn't a brilliant piece of planning to launch an infantry attack across a river into rough ground during a thunderstorm with no maps, no idea where the enemy was and so much iron ore in the ground that compasses didn't work.