Boer War Records for Australians

Hi Everybody!

I've just found out that my ancestor James Salter Armstrong is listed in the Kerang nominal roll for the Anglo Boer War (1899 - 1902) in Africa.

I'm looking for his records now and I've found many people with the name Armstrong, but none seem correct for my ancestor.

Anybody got any ideas on this one?

Historically yours,
Valerius Copernicus