There are two main flags of Scotland which are often used interchangeably. This is incorrect as one the St Andrew’s Cross or Saltire is the National Flag and the other the red and yellow Lion Rampant. The two Flags are illustrated above:-
The Saltire has been used since the ninth century AD, though the blue background was only mentioned in 1542. The Lion Rampant ahs been used since the thirteenth century though the design has altered to some extent.