Cadoudal means in Breton language "warrior returning from the fight". Born in Brech, in Brittany, after completing his education, he remained true to his Royalist and Roman Catholic convictions during the start of the Revolution. From 1793 he organized a rebellion in the Morbihan against the National Convention of the First Republic. It was quickly suppressed, and he thereupon joined the army of the Vendée insurrection, taking part in the battles of Le Mans and of Savenay in December of the same year.