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.