The Irish foot did not have the equipment or the training to form itself up into pike-squares and so were defenseless against horse. Therefore St. Ruth would only put them where cavalry could not go. It followed that the bog must be a formidable barrier, for St. Ruth was trusting it to preserve his infantry from a frontal charge. The Butcher of Savoy, as the Huguenots called him, had, however, felt obliged to put his cavalry at the ends, to prevent the infantry from being flanked and destroyed; so there must be easier ways of getting across the bog in those places.