 In 1847 he was promoted to the rank of sergeant major and retired from active duty for health reasons in 1849.Two years later he was called to participate in the 1851 Revolution to overthrow the newly elected President Manuel Montt and to repeal the 1833 Constitution.In 1857 he was appointed mayor and commander of weapons of Arauco, in whose care had to quell the uprising of the southern provinces during the revolution of 1859.