Headdress
The Glengarry worn by the Argylls is unique in having red and white dicing; other Scottish and Highland units generally have a black square alternating with red in the centre row. This pattern of dicing was worn by the 93rd Sutherland Highlanders on Kilmarnock bonnets and balmorals from their inception in 1803 to their amalgamation with the Argyllshire Highlanders in 1881, and on glengarries by the Imperial Argyll and Sutherland Highlanders from 1881 to 2006. Affiliate regiments in the Commonwealth also wear this unique pattern of glengarry, including the Calgary Highlanders. Regimental pipers in all Argyll-affiliated units wear plain black glengarries without dicing.
Read more about this topic: The Argyll And Sutherland Highlanders Of Canada (Princess Louise's)