The Mexican Revolution continues: At the Second Battle of Agua Prieta, General Plutarco Elías Calles, commanding the Sonora division of the Constitutional Army of Mexico defeats a militia (citizen-volunteers), commanded by General Pancho Villa.

       NOTE: Villa would have probably won the battle had it not been for the authorization of Democratic (socialist/proto-fascist) President Wilson to transport reinforcement from the border towns of Piedras Negras, Coahuila / Eagle Pass, texas by train to Douglas, (Federal enclave of) Arizona, which is directly across the border from Agua Prieta, Sonora.

       [added 6/10/2022]