[1] On January 29, 1911, José María Leyva and Simón Berthold took over the border town of Mexicali with a group of approximately 30 rebels.

A significant number of new recruits came from American to fight as guerillas in the Liberal Army, many IWW members such as John R. Mosby enlisted, convinced by the revolutionary ideas they shared with the Mexican Liberal Party.

Mosby remained in command until the defeat and surrender of the rebellion in Tijuana on June 22, 1911.

He returned to the United States where he was imprisoned on McNeil Island along with other members of the PLM.

He was offered his freedom in exchange for testifying against Ricardo Flores Magón, which he refused.