David,
Many thanks for the link -I found it after I posted this comment, so felt a bit of a twit!
In his particular case this would mean that he would have been on board the 'Aurania' as a surgeon (presumably doctor too?) and would treat the more seriously wounded soldiers? and then would they be transferred to other ships for returning too England if they could not go back out to fight another date. I was (perhaps unnecessarily) catalogue-ing regiment by regiment the casualties of certain regiments from the "Casualties of the S.A.F.F." and noted that a couple had died 'at sea' and in St. Helena -I am guessing these were troops that were homeward bound, but their predicament got the better of them.
...and would the next step be to start looking to Merchant Navy records? Or would you keep battling on in military records.
My mother says she can remember him talking about wounded Boers coming on board, and being absolutely petrified about leaving dry land! So he definitely treated them too!
Many thanks,
Tom