For those that may not know. Today's Argyll and Sutherland Highlanders is an amalgamation of the 91st and 93d Regiments of Foot. While the 91st had to endure, for a short period of time, wearing the trews of a lowland regiment in lieu of the kilt; the 93d were once and always a Highland regiment. They narrowly missed extinction during one of the various drawdowns of the British Army at the hands of various left wing governments, but have endured.
For a great tale of life in a Highland regiment, try to catch "Tunes of Glory" starring Alex Guinness and John Mills. A real classic.
The original Thin Red Line.