 Led by 27-year-old René Capistrán Garza, the leader of the Mexican Association of Catholic Youth, the region would become the main focal point of the rebellion.The formal rebellion began on January 1, 1927 with a manifesto sent by Garza, "A la Nación" ("To the Nation").It declared that "the hour of battle has sounded" and that "the hour of victory belongs to God."