Attached is a photograph of soldier killed in WWI but would really appreciate any details the experts here can provide.
Known facts:
Private William CALDWELL #19134
born 1878
10th Bn Royal Inniskilling Fusiliers
enlisted Kilrea, Londonderry, Ireland
to France Oct.1915
killed in action 20 Jan.1917
He was in the Ulster Volunteer Force before the War.
The badge on his cap looks like a flag (light background with darker diagonal and horizontal lines crossing in the centre).
Also wondering about rifle he's holding (303?), etc.
Any opinions on style of unifrom, rifle, cap badge, etc?