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The Centennial of the Battle of Ambos Nogales
[Infogalactic] The Battle of Ambos Nogales (The Battle of Both Nogales), or as it is known in Mexico La batalla del 27 de agosto (The Battle of 27 August), was an engagement fought on 27 August 1918 between Mexican forces and elements of US Army troops of the 35th Infantry Regiment, who were reinforced by the Buffalo Soldiers of the 10th Cavalry Regiment, and commanded by Lt. Col. Frederick J. Herman. The American soldiers and militia forces were stationed in Nogales, Arizona, and the Mexican soldiers and armed Mexican militia were in Nogales, Sonora.[2] This battle was notable for being a significant confrontation between US and Mexican forces during the Border War which took place in the context of the Mexican Revolution and the First World War.

This occurred after the Zimmermann telegram during World War I, when the international border between the two Nogaleses was a wide-open boulevard named International Street.
Imperial German may or may not have been involved, but in any case, border problems with Mexico are nothing new.
Posted by: charger 2018-08-27
http://www.rantburg.com/poparticle.php?ID=521569