Rodolfo Herrero

It was near the rural village of La Union that Carranza's small party was joined by the forces of Rodolfo Herrero.

Herrero offered to guide and escort Carranza's party through the rugged rural area of northern Puebla.

In the early morning of May 21, 1920, Carranza's party was attacked by soldiers believed to be under the command of the Herrero brothers.

He espoused the alternative theory that Carranza after being wounded in the leg, had committed suicide, as stated by several eyewitnesses, including Paulino Fontes, Manuel Aguirre, Pedro gil Farias and Ignacio Suarez.

This theory presumes that general Basave y Piña never intended to kill Carranza but to capture him.