Neither side was satisfied with these terms. Coligny and the Prince de Conde were annoyed furthermore by the fact that the regent broke off her close relations with them, and began to lean towards the Catholic side and toward an alliance with Spain. After raising large sums of money and arming their forces for a new effort they determined to seize the king and his court at Monceau, but the Constable de Montmorency with six thousand trusty Swiss soldiers hastened to the king's defence, and brought him safely from the midst of his enemies (1567). This attempt together with the terrible slaughter of Catholics at Nimes (29 Sept.)[7] led to the outbreak of the second civil war. The Catholic forces were successful at St. Denis though they lost one of their ablest generals, the Constable de Montmorency, and were deprived of the fruits of their victory by the intervention of the Elector of the Palatinate. Owing to the mediation of the latter a new treaty was made in 1568, but as the Huguenots continued to seek alliances with England, Germany, and the Netherlands, Charles IX. recalled the concessions he had made, and forbade the exercise of Calvinist worship under penalty of death. Thereupon the third civil war broke out (1569). The Huguenots received assistance from England, the Netherlands, and Germany, while the Catholics were supported by Spain and the Pope. The war was carried on with relentless cruelty on both sides. In the battle of Jarnac the Huguenot forces were defeated, and the Prince de Conde was slain (1569). The struggle was however continued by Coligny supported by Henry King of Navarre and the young de Conde. By wonderful exertions Coligny put a new army into the field only however to suffer another terrible defeat at Montcontour, where the Huguenots were almost annihilated. It seemed that the long struggle was to end at last and that peace was to be restored to France. But unfortunately at this juncture some of his courtiers succeeded in convincing Charles IX. that his brother, the Duke of Anjou, who with the young Duke of Guise was mainly responsible for the Catholic victories, might use his recognised military ability and his influence with the people to make himself king of France. Alarmed by the prospect of such a contingency Charles IX., already jealous of his brother's triumphs, turned against the Catholic party and concluded the Peace of St. Germain-en-Laye with the Huguenots (1570).