Analysing the make-up and workings of the Royalist party in Scotland and Ireland during the civil wars of the mid-seventeenth century, Royalists at War is the first major study to explore who Royalists were in these two countries and why they gave their support to the Stuart kings. It compares and contrasts the actions, motivations and situations of key Scottish and Irish Royalists, paying particular attention to concepts such as honour, allegiance and loyalty, as well as practical considerations such as military capability, levels of debt, religious tensions, and political geography.