At the outbreak of the War of the Pacific in 1879 he was already retired, but he requested and obtained his return to service, being appointed Chief of Staff of the Defense Army of Lima.

He began military service in 1841, and due to his outstanding performance in various campaigns he earned successive promotions until he reached the class of Brigadier General.

His request was granted, and in 1880 he was entrusted with the leadership of the General Staff of the Defense Army of Lima under the orders of the dictator Nicolás de Piérola.

Despite being a veteran, he knew how to adapt to modern tactics and contributed to the organization, equipping and training of the army destined for the defense of Lima, overcoming great difficulties.

Covering the wound with a handkerchief, he continued fighting, until a machete blow to his head blinded his life, at the foot of Cerro Sazón.