Wikipedia:
The Gordon Highlanders was a line infantry regiment of the British Army that existed for 113 years, from 1881 until 1994 when it was amalgamated with the Queen's Own Highlanders (Seaforth and Camerons) to form the Highlanders (Seaforth, Gordons and Camerons) which was later merged with the Royal Scots Borderers, the Royal Highland Fusiliers (Princess Margaret's Own Glasgow and Ayrshire Regiment), the Black Watch (Royal Highland Regiment) and the Argyll and Sutherland Highlanders to form the Royal Regiment of Scotland, a large regiment. The Gordon Highlanders took its name from the Clan Gordon and recruited principally from Aberdeen and the North-East of Scotland.

Corporal Reid's complete uniform, glengarry, pipes, kilt, sporran and revolver are the last five photos.