Archibald Campbell, Marquess of Argyll, 8th Earl of Argyll, Chief of Clan Campbell was a Scottish nobleman, politician, and peer. The de facto head of Scotland's government during most of the conflict of the 1640s and 1650s known as the Wars of the Three Kingdoms, he was the main leader of the Covenanter movement that fought for the Establishment of Presbyterianism in opposition to the preference of King Charles I and the Caroline Divines for instead Establishing both High Church Anglicanism and Bishops. He is often remembered as the principal antagonist to the Royalist general James Graham, 1st Marquess of Montrose.

The Wars of the Three Kingdoms, sometimes known as the British Civil Wars, were a series of intertwined conflicts fought between 1639 and 1653 in the kingdoms of England, Scotland and Ireland, then separate entities united in a personal union under Charles I. They include the 1639 to 1640 Bishops' Wars, the First and Second English Civil Wars, the Irish Confederate Wars, the Cromwellian conquest of Ireland and the Anglo-Scottish War of 1650–1652. They resulted in victory for the Parliamentarian army, the execution of Charles I, the abolition of monarchy, and founding of the Commonwealth of England, a unitary state which controlled the British Isles until the Stuart Restoration in 1660.