royalist armies, like those led by james graham, marquis of montrose (1643–44) and in glencairn's rising (1653–54) were mainly composed of conventionally armed infantry with pike and shot. montrose's army also included a contingent of irish confederate troops and scottish recruits from highland clans hostile to the clan campbell, under the under leadership of alasdair mac colla. glencairn's rising gained some support from lowland scottish lords and at its height had 3,500 infantry and 1,500 cavalry. the forces under montrose's command reached about the same numbers of infantry, but were short of heavy artillery suitable for siege warfare and had only a small force of cavalry, about 300, supplied from the estate of the earls of huntly.