During the Bishops' Wars General Robert Monro of the Obsdale branch of the clan laid siege to and took Spynie Palace, Drum Castle and Huntly Castle. From 1642 to 1648 he commanded the Scottish Covenanter army in Ireland during the Irish Confederate Wars. There were several Munro officers in regiments that fought on the Covenanter side at the Battle of Philiphaugh in 1645.