There was a complicated involvement between Scotland and the Thirty Years' War of 1618–1648. Scotland and the Scots were heavily entangled in both the diplomatic and military events which centred on the Holy Roman Empire. There were a number of reasons for this participation.

Elizabeth Stuart was Electress of the Palatinate and briefly Queen of Bohemia as the wife of Frederick V of the Palatinate. The couple's selection for the crown by the nobles of Bohemia was part of the political and religious turmoil setting off the Thirty Years' War. Since her husband's reign in Bohemia lasted over one winter, she is called "the Winter Queen".