Francisco "Pancho" Villa was a Mexican revolutionary and prominent figure in the Mexican Revolution. He was a key figure in the revolutionary movement that forced out President Porfirio Díaz and brought Francisco I. Madero to power in 1911. When Madero was ousted by a coup led by General Victoriano Huerta in February 1913, Villa joined the anti-Huerta forces in the Constitutionalist Army led by Venustiano Carranza. After the defeat and exile of Huerta in July 1914, Villa broke with Carranza. Villa dominated the meeting of revolutionary generals that excluded Carranza and helped create a coalition government. Emiliano Zapata and Villa became formal allies in this period. Like Zapata, Villa was strongly in favor of land reform, but did not implement it when he had power.
Buffalo Soldiers were United States Army regiments composed exclusively of African American soldiers, formed during the 19th century to serve on the American frontier. On September 21, 1866, the 10th Cavalry Regiment was formed at Fort Leavenworth, Kansas. The nickname "Buffalo Soldiers" was purportedly given to the regiments by the American Indian tribes who fought against them during the American Indian Wars, and the term eventually became synonymous with all of the African American regiments that were established in 1866, including the 9th Cavalry Regiment, 10th Cavalry Regiment, 24th Infantry Regiment, 25th Infantry Regiment and 38th Infantry Regiment.
The Battle of Celaya, 6–15 April 1915, was part of a series of military engagements in the Bajío during the Mexican Revolution between the winners, who had allied against the regime of Gen. Victoriano Huerta and then fought each other for control of Mexico. The Constitutionalists under Gen. Venustiano Carranza faced off against the Army of the División del Norte of Pancho Villa. The first battle of Celaya was fought April 6–7, 1915, near Celaya in present-day Guanajuato, Mexico. The second battle of Celaya was fought April 15–16. These encounters between the Constitutionalist Army led by Gen. Álvaro Obregón, Venustiano Carranza's best general, and the army under the command of Pancho Villa were crucial in determining the outcome of the Mexican Revolution.
The Pancho Villa Expedition—now known officially in the United States as the Mexican Expedition, but originally referred to as the "Punitive Expedition, U.S. Army"—was a military operation conducted by the United States Army against the paramilitary forces of Mexican revolutionary Francisco "Pancho" Villa from March 14, 1916, to February 7, 1917, during the Mexican Revolution of 1910–1920.
The Battle of Carrizal occurred on June 21, 1916. It was a major skirmish between United States Army troops of General John J. Pershing's Punitive Expedition and Carrancista troops fought at the town of Carrizal in the Mexican state of Chihuahua.
The Apache Scouts were part of the United States Army Indian Scouts. Most of their service was during the Apache Wars, between 1849 and 1886, though the last scout retired in 1947. The Apache scouts were the eyes and ears of the United States military and sometimes the cultural translators for the various Apache bands and the Americans. Apache scouts also served in the Navajo War, the Yavapai War, the Mexican Border War and they saw stateside duty during World War II. There has been a great deal written about Apache scouts, both as part of United States Army reports from the field and more colorful accounts written after the events by non-Apaches in newspapers and books. Men such as Al Sieber and Tom Horn were sometimes the commanding officers of small groups of Apache Scouts. As was the custom in the United States military, scouts were generally enlisted with Anglo nicknames or single names. Many Apache Scouts received citations for bravery.
Fort Naco, Camp Naco, or Fort Newell began as a camp in the Southwest United States, on the outskirts of Naco, Arizona as part of the Mexican Border Project. Over time adobe and wooden buildings were constructed to house the garrison along with other permanent structures.
The Battle of Ambos Nogales was an engagement fought on 27 August 1918 between Mexican forces and United States Army elements from the 35th Infantry Regiment and 10th Cavalry Regiment during the Mexican Border War. The American soldiers and militia forces were stationed in Nogales, Arizona, and the Mexican soldiers and armed Mexican militia were in Nogales, Sonora. This battle was notable for being a significant confrontation between U.S. and Mexican forces during the conflict, which took place during the Mexican Revolution and World War I.
The Battle of Columbus, also known as the Burning of Columbus or the Columbus Raid, began on March 9, 1916, as a raid conducted by remnants of Pancho Villa's Division of the North on the small United States border town of Columbus, New Mexico, located 3 miles (4.8 km) north of the border with Mexico. The raid escalated into a full-scale battle between Villistas and the United States Army.
The Second Battle of Agua Prieta, 1 November 1915, was fought between the forces of Pancho Villa and those of the future President of Mexico, Plutarco Elías Calles, a supporter of Venustiano Carranza, at Agua Prieta, Sonora, as part of the Mexican Revolution. Villa's attack on the town was repulsed by Calles. The battle helped to establish Carranza's control over Mexico and directly led to his becoming, with United States recognition, president. Villa believed that Calles had received tactical and strategic support from the United States since the town is located across the border from Douglas, Arizona and launched his raid on Columbus, New Mexico partly as a reprisal.
The First Battle of Nogales, was a military confrontation between federal Mexican forces and rebel Constitutionalists during the Mexican Revolution.
The Battle of Naco, or the First Battle of Naco due to a later siege was a battle of the Mexican Revolution between Constitutionalist forces and Mexican government forces. Rebel forces under General Alvaro Obregon defeated the Mexican Army garrison and captured Naco, Sonora.
The Mexican Border War, also known as the Border Campaign, refers to a series of military engagements which took place between the United States military and several Mexican factions in the Mexican–American border region of North America during the Mexican Revolution. It was the last major conflict fought on U.S. soil.
The Battle of Parral, on April 12, 1916, was the first battle between soldiers of Venustiano Carranza, known as Carrancistas, and the United States military during the Mexican Expedition. When a small force of American cavalry was leaving the city of Parral, in the Mexican state of Chihuahua, a superior force of Carrancista soldiers attacked which resulted in a bloody running engagement. Using a strategy of organized withdrawal, the Americans were able to repulse the Mexican attacks and safely escape to the fortified village of Santa Cruz de Villegas.
The Battle of Guerrero, or the Battle of San Gerónimo, in March 1916, was the first military engagement between the rebels of Pancho Villa and the United States during the Mexican Expedition. After a long ride, elements of the American 7th Cavalry Regiment encountered a large force of Villistas at the town of Guerrero in the state of Chihuahua. In what has been called the "last true cavalry charge," the Americans assaulted the town and routed the defenders, inflicting over seventy-five casualties on the Mexicans with the loss of only five men wounded.
The raid on Glenn Springs occurred on the night of May 5–6, 1916, when Mexican Villistas and Carrancistas attacked the towns of Boquillas and Glenn Springs, Texas. In Glenn Springs, the raiders burned several buildings and fought a three-hour battle with a small force of American soldiers who were stationed there. At the same time, a second party of rebels robbed a general store and a silver mine in Boquillas. Four Americans were killed and the rebels took two hostages to Coahuila. In response to the attack, the United States Army launched a short punitive expedition into Mexico, fought with the rebels, and rescued the captives.
The Third Battle of Ciudad Juarez, or simply the Battle of Juarez, was the final major battle involving the rebels of Francisco "Pancho" Villa. It began on June 15, 1919, when Villa attempted to capture the border city of Ciudad Juarez from the Mexican Army. During the engagement the Villistas provoked an intervention by the United States Army protecting the neighboring city of El Paso, Texas. The Americans routed the Villistas in what became the second largest battle of the Mexican Revolution involving the US, and the last battle of the Border War. With the American army closing in, the Villistas had no choice but to retreat. Pancho Villa then attacked Durango but lost again, so he retired to his home at Parral, Chihuahua in 1920, with a full pardon from the Carrancista government.
The Raid onSan Ygnacio refers to a skirmish on June 15, 1916 between the United States Army and Mexican raiders near the border town of San Ygnacio, Texas. Three different Mexican factions were known to have launched raids into Texas at the time but most of the evidence suggests that either Sediciosos or Carrancistas were responsible for the incursion. Four American soldiers and at least six of the raiders were killed during the battle and the resulting American punitive expedition further strained the already hostile relationship between the Mexican and United States governments.
With the end of World War I in 1918, the Air Service, United States Army was largely demobilized. During the demobilization period of 1919, the Regular Army and its air arm answered a call to defend the southern border against raids from Mexico, and to halt smuggling of illegal aliens and narcotics into the United States and weapons from the United States into Mexico.
Henry Rodney Adair (1882–1916) was an American cavalry officer. He is most notable for his participation in the Battle of Carrizal of the Pancho Villa Expedition.
United States 
Alvaro Obregón 