Resistance to conscription soon escalated into a full rebellion, known as the War in the Vendée. Soon after, De la Rochejaquelein and his compatriots started fighting the troops of the French Republic with Maurice d'Elbée and the Marquis de Bonchamps from April 1793. There, he gave his famous order, "Mes amis, si j'avance, suivez-moi! Si je recule, tuez-moi! Si je meurs, vengez-moi!". Leading a few thousand Vendéan peasants, De la Rochejaquelein gained his first victory over the French Revolutionary Army on 13 April, took part to the taking of Bressuire on 3 May, in the Battle of Fontenay-le-Comte on 25 May and in the Battle of Saumur on 9 June. At Fontenay he was famous for his contempt for danger, wearing three red handkerchiefs; on his head, around his neck and at his waist to defy the Republican gunners. After Fontenay his companions decided that they would also wear three red handkerchiefs so that De la Rochejacquelin could not be singled out. In August, after the Battle of Luçon, he regrouped the Vendéan army, which was on the verge of being disbanded, and won the Battle of Chantonnay on 5 September. On 13 September the thumb of his right hand was shattered by a bullet during an engagement with Republicans at Martigné-Briand but he continued to fire at his opponents. His famous portrait by Pierre-Narcisse Guérin shows him with his right arm in a sling, shooting with his left hand. He had to retreat across the Loire after being beaten in the Battle of Cholet, on 17 October.
Final months
On 20 October, De la Rochejaquelein was unanimously elected as commander-in-chief of the Catholic and Royal Army, replacing D'Elbée who had been severely wounded in Cholet. However, his bravery did not compensate for his lack of experience and strategic skills. He marched onto Granville, took Avranches on 12 November but failed to seize Granville and retreated to Angers in order to cross the Loire. Larger forces under François Séverin Marceau, Jean Baptiste Kléber, and François Joseph Westermann gave chase, defeating him once in Le Mans on 12 December and again, more severely, on 23 December in Savenay. After this decisive rout, the Catholic and Royal Army was no longer a fighting force; De la Rochejacquelein had to take to the woods disguised as a peasant. He managed to save the remains of his army by crossing the Loire, and left under the criticism of his fellow companions. While trying to pursue a guerrilla war against the Republicans, he was killed by a Republican soldier near Nuaillé on 28 January 1794. On a reconnaissance mission he had spotted two Republican soldiers who pretended to surrender to him, but then shot him in the forehead. His brother Louis became the head of the royalists in Vendée in 1813 and furthered the royalist cause there during the Hundred Days period. He fell in battle at Pont-de-Mathis on 4 June 1815.