Lovat's Scouts were formed in January 1900 by Simon Fraser, 14th Lord Lovat. Initially recruited initially from gamekeepers on Highland estates.
Lovat's Scouts were attached to the Black Watch and disbanded in July 1901 forming companies, the 113th and 114th IY. On the cessation of hostilities, the two companies returned to the United Kingdom on board the SS Tintagel Castle and were disbanded.
See the forum post for pictures of Lovat's Scouts.
One account notes "Many of their soldiers were elderly (the youngest being 42) gamekeepers from big Scottish estates and were famed for their shooting. These sharpshooters became the first sniper unit in the British Army, where previously such military tactics were considered uncivilised."