 Diaz tried to use the army to suppress the revolts, but most of the ranking generals were old men close to his own age and they did not act swiftly or with sufficient energy to stem the violence.Revolutionary force—led by, among others, Emiliano Zapata in the South, Pancho Villa and Pascual Orozco in the North, and Venustiano Carranza—defeated the Federal Army.Díaz resigned in May 1911 for the "sake of the peace of the nation".