"Royal Scots" is a term that pertains to one of the most oldest and distinguished Scottish regiments to have served in the British Army. However, there are other terms or phrases that can be used synonymously with "royal scots" that also represent the Scottish military. For instance, the "Black Watch" is another Scottish regiment that dates back to the early eighteenth century. Another synonym for the "royal scots" could be "the Highlanders." This phrase usually refers to any Scottish regiment that is based in the Scottish Highlands. These three terms, among others, are commonly used to talk about Scottish military units that have a longstanding history of service and dedication to their country.