flag of a constituent unit of the United Kingdom, flown subordinate to the Union Jack, that consists of a blue field (background) bearing a white saltire (diagonal cross) that extends to the flag corners; this type of emblem is known as the Cross of St. Andrew (after the patron saint of Scotland).
Detail: Adopted: 1542 (national flag)
Story: The flag of Scotland is the national flag of Scotland, which consists of a white saltire defacing a blue field. The Saltire, rather than the Royal Standard of Scotland, is the correct flag for all private individuals and corporate bodies to fly.
Design: A blue field with a white saltire that extends to the corners of the flag. In Blazon, Azure, a saltire Argent.