The armies now destined to combat for two kings on Irish soil were strongly marked by those distinctions of race and religion which add bitterness to struggles for power, while they present striking contrasts to the eye of the painter of military life and manners. King James's troops were chiefly Celtic and Catholic. There were four regiments commanded by O'Neils, two by O'Briens, two by O'Kellys, one each by McCarthy More, Maguire, O'More, O'Donnell, McMahon, and Magennis, principally recruited among their own clansmen.