From the earliest weeks of 1638 few people could doubt that Charles I faced the prospect of a rebellion in his ‘native kingdom’. Ostensibly Scottish agitation was triggered by the threat of religious uniformity being imposed by the king, thereby disregarding the Calvinist traditions of the Kirk in Scotland and resulting in the drafting and signing of the National Covenant in 1638. It is generally agreed that religious and political tensions in Scotland can be easily traced to the 1633 Scottish Coronation Parliament and even to the proroguing English Parliament in 1629. The Covenanting movement represented a revolutionary alliance comprising the majority of the nobility (especially the lairds), the commercial classes and the Presbyterian interest in Scotland. These combined to redress constitutional and nationalist grievances in the state as well as to uphold the Presbyterian version of the reformed tradition in the Kirk. Scrutiny of the political and religious discord will here only be touched on briefly where it informed the decisions of the Scottish military commanders who fought either for or against the Covenanter regime.