Hello Jim,
He’s a Private in a Scottish regiment, he doesn’t have a Sporran, his Glengarry doesn’t have dicing, and the tartan looks to be of a darker variety. The cap badge is very rounded looking but seems to get a bit sparse at the top. There’s possibly something on his epaulettes or is that a scratch. His pockets have pleats so possibly fairly early in the war.
If he served overseas in a theatre of war he would have received campaign medals after the war and would be on the medal card lists available on Ancestry, and also here. Hopefully any record would have Angus rather than just initial A.
http://discovery.nationalarchives.gov.u ... image1.y=9
Of those 20 there are 11 in Scottish regiments and none of them appear to have died during the war. There are two Sergeants, one with a middle name. Perhaps someone very young would be less likely to make that rank.
Ross, Angus McKay. Corps: Cameron Highlanders. Regiment No: 226142. Rank: Serjeant.
Ross, Angus. Corps: Lovat Scouts. Regiment No: 4040. Rank: Serjeant....
According to the newspapers these two were wounded, and one appears to have a middle name. Was there any info that yours was wounded?
Ross, Angus A. Corps: Seaforth Highlanders. Regiment No: S/10865. Rank: Private. [Wounded Jan 1918 – NOK at Culrain]
Ross, Angus. Corps: Lovat's Scouts. Regiment No: 3691. Rank: Private.... [2nd LS - Wounded Dec 1915]
Here’s the balance and one of those appears to have a middle name.
Ross, Angus. Corps: Scottish Rifles. Regiment No: 27124. Rank: Private....
Ross, Angus. Corps: Royal Scots. Regiment No: 63228. Rank: Private.
Ross, Angus. Corps: Gordon Highlanders. Regiment No: 42570. Rank: Private....
Ross, Angus M. Corps: Royal Highlanders. Regiment No: S/12758. Rank: Private.
Ross, Angus. Corps: Seaforth Highlanders. Regiment No: S/4236. Rank: Private....
Ross, Angus. Corps: Cameron Highlanders. Regiment No: 40395. Rank: Private....
Ross, Angus. Corps: Scots Guards. Regiment No: 16919. Rank: Private.
Maybe checking Ancestry for records of some of those may help. There may be enough info on any surviving service records to at least eliminate some of the above.
I was thinking he looked like a Gordon Highlander but his cap badge is on a bit of an angle and I’m no expert, and I’m a bit worried about whether the tartan is right. Have a look at this page.
http://gordonhighlanders1914-18.co.uk/uniform.html
If you don’t get a useful reply here you could try the Great War Forum where the WW1 experts live.
http://1914-1918.invisionzone.com/forums/index.php
All the best,
Alan