On 29 January 1911, Leyva, Simón Berthold and a group of 30 guerrillas took the town of Mexicali, an event that marked the beginning of the liberation campaign of PLM in Baja California.
In 1911, on January 29th, Leyva, Simón Berthold, along with a team of 30 guerillas, took control of Mexicali, initiating the fight for liberation by PLM in Baja California.