The War in the Vendée was an armed rebellion against the conscription of men for the army and against the National Convention's hostility toward priests. Led by the local nobility, the Vendeans soon proved to be a formidable foe. To deal with the threat, the French government formed three armies, the "Army of the Coasts of La Rochelle" from the Gironde to the mouth of the Loire River, the "Army of the Coasts of Brest" from the Loire to Saint-Malo and the "Army of the Coasts of Cherbourg" from Saint-Malo to the Authie River east of the Somme River. On 9 June 1793 the Vendeans drubbed Jacques-François Menou's division in the Battle of Saumur. Though Jean Baptiste Camille Canclaux defeated the rebels in the Battle of Nantes on 29 June, the Vendeans won the Battle of Vihiers on 18 July when a large part of the Republican forces simply ran away.