The Blythswood Rifles was a Scottish Volunteer unit of the British Army. Raised in Glasgow from 1859, it later became a battalion of the Highland Light Infantry. During World War I it served at Gallipoli, in Egypt and Palestine, in Ireland, and on the Western Front. Converted into an anti-aircraft artillery regiment just before World War II, it served in The Blitz and in the Middle East during the war, and continued in the postwar Territorial Army until 1955.

The Highland Light Infantry (HLI) was a light infantry regiment of the British Army formed in 1881. It took part in the First and Second World Wars, until it was amalgamated with the Royal Scots Fusiliers in 1959 to form the Royal Highland Fusiliers which later merged with the Royal Scots Borderers, the Black Watch, the Highlanders and the Argyll and Sutherland Highlanders to form the Royal Regiment of Scotland, becoming the 2nd Battalion of the new regiment.