. Reserve units were for the most part distinguished by having silver (rather than gold-coloured) lace, buttons and accoutrements in full dress. From the Crimean War on, a narrow red stripe (piping) down the outside of each trouser leg was common to all red coated infantry units. Cavalry however wore stripes of regimental colour (white, yellow, blue/grey etc.) on their riding breeches. Scottish Highland regiments did not wear trousers, favouring the kilt, and Scottish Lowland regiments adopted tartan trews. All Scottish regiments wore doublets of distinctive cut instead of the tunics of English, Irish and Welsh units.