Beginnings Born in
Buenos Aires,
Argentina, on January 29, 1820, he was the son of Francisco de Paula Flores and Josefa Luisa Velasco. His father was appointed chief magistrate of
Salta in 1825, prompting the family to move to that city. Although his parents had planned for him to be a lawyer, Flores escaped to Bolivia in 1841. At the time of his arrival,
Peru had launched an invasion of
Bolivia. Determined to become a soldier, he entered the army as a second lieutenant of Infantry in the 8th battalion, heroically fighting at the Battle of Ingavi, where he was promoted by
José Ballivián to the rank of first lieutenant on 21 November of the same year. During the government of General Ballivian, Flores devoted himself to his new career, being promoted to the rank of captain in January 1845; in 1847, Flores was promoted to the rank of major, being the third in command of his battalion. By March 1849, he was granted the rank of commander. With the fall of presidents Ballivián,
Guilarte and
Velasco,
Manuel Isidoro Belzu had seized power and started the persecution of all
ballivianistas. Flores was among the persecuted and was forced to retire from the army as a result.
Incident in Peru In 1857, he took part, with the rank of lieutenant colonel, in the
linarista revolution, having been appointed by the revolutionary council of
Potosí as Commander of Arms of the garrison. In 1860, promoted by Linares to the rank of colonel, he was assigned as commander of the 10th battalion. At the head of said battalion, Flores crossed the
Dasaguadero River and reached
Yunguyo in pursuit of some political prisoners who had taken refuge in Peru. This controversy pushed the Peruvian government to militarize in preparation for a war against Bolivia, mounting an army of 15,000. However, with the threat of war averted, Flores headed to
Copacabana in pursuit of the indigenous bands that had revolted against Linares in favor of Belzu. In an act of cruelty, Flores entered the town making and hunted the persecuted like animals, brutally murdering most of the rebels and taking five prisoners; they were executed soon thereafter. == The Constitutionalist Revolution of 1865 ==