Throughout most of the 1860’s war was raging on both sides of the U.S.-Mexican border. North of the Rio Grande American fought American and south of the Rio Grande Mexican fought Mexican with outside assistance for each. It was inevitable that the two would overlap but few today are aware of the struggle between republicans and monarchists that was going on right in the backyard of Texas. At the end of the American Civil War roughly eight to ten thousand Confederates fled to Mexico (then the [second] Mexican Empire) rather than live under Union rule. The Mexicans called them los Confederados and some of the more notable ones included Texas governors Edward Clark and Pendleton Murrah as well as generals such as Edmund Kirby Smith, Sterling Price, John B. Magruder and Joseph O. Shelby. For some, the war in Mexico was quick to greet them such as when Missouri General Mosley Monroe Parsons along with his officers and their families were robbed and then massacred by republican bandits. Others made the trip safely and offered their support to the embattled Emperor Maximilian.
The welcome given to the Confederates in Mexico did not help the already tense relations between the United States and the Empire of Mexico. General Tomas Mejia of the Imperial Mexican Army was wary of the increasing number of U.S. troops being sent to the south Texas border. The U.S. had been openly antagonistic about the French intervention in Mexico and never recognized the government of Emperor Maximilian. The largely African-American force of U.S. soldiers on the border were sympathetic to the fugitive Mexican president, Benito Juarez, with only some of the more devoutly Catholic Irish-American U.S. soldiers speaking favorably of Maximilian because of his greater respect for the Church compared to the notoriously anti-clerical Juarez. In time, both the Mexican imperial and republican armies on the border would come to include former U.S. and Confederate soldiers. The Confederates naturally took the side of Emperor Maximilian for the most part, due to his closeness with Imperial France which had been somewhat friendly toward the Confederacy. Most of the Union soldiers sided with Juarez and the republicans. Some still serving with the U.S. Army were allowed and even encouraged to “desert”, cross the border and join the forces of Benito Juarez. Despite orders from Washington to the contrary, Union officers provided large amounts of supplies, uniforms, guns and ammunition to the Juaristas.
As always, the conflict on the border had a style all its own. On one side was General Mejia with 3,000 imperial troops, including about 300 French and Austrian soldiers. Their army was harassed constantly by the regular and bandit forces of Benito Juarez as well as the bandits of the local border chieftain Juan Cortina who switched allegiances several times. In the summer of 1865 General Mejia embarked on an offensive toward Camargo that cleared out the republican bandits and Juaristas. Consolidation was able to take place and the city of Matamoros was cleaned up and work even got underway by a Belgian company to build an opera house in anticipation of a visit by the Emperor and Empress.
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| Juan Cortina |
Eventually, Cortina drove the imperialistas out of Camargo but he was in turn dealt severe defeats in an attempted raid on an imperial supply train and an imperialista attack on his own encampment. The situation soon degenerated into a no-holds-barred guerilla war. The French and Mexican imperialists decided to fight fire with fire and turned to the flamboyant and vicious Colonel Charles Dupin, leader of the contra-guerillas who struck the republican forces with such ferocity and cruelty that he was nicknamed the “hyena of Tamaulipas” and his men, the “Red Devils”. However, both sides were equally brutal no doubt about it.
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| Tomas Mejia |
The attack on Matamoros went on for sixteen days until an imperial cavalry patrol discovered that the Juaristas had abandoned their lines and retreated on November 9. Total losses for the Juaristas amounted to five hundred dead or wounded and fifty-eight taken prisoner while General Mejia had lost fewer than twelve. Yet, as long as the republicans remained in the area the fight went on with Juarista raiders attacking French and Imperialista detachments. In December, General Escobedo even managed to take Monterrey though it was quickly taken back by only seven hundred imperial cavalry. The town of Bagdad also came under attack, first by American land pirates and again in January of 1866 by forces allied with the scheming U.S. General Lew Wallace. Lt. Colonel J.D. Davis commanding the 118th Colored Troops (the official designation for African-Americans serving in the U.S. Army at the time) at Clarksville, Texas also allowed the invaders to pass and many of his troops even joined the expedition. The raiders overcame the guards at Bagdad on January 5, surprised and captured the guard commander and murdered the imperialist mayor. The town was seized and plundered by the American forces.
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| Imperial Mexican troops |
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| Emperor Maximilian |






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