|Mexican Service Medal|
|Awarded for||participation in engagements between armed forces of the United States and Mexico between April 12, 1911 and February 7, 1917.|
|Presented by||Department of War and Department of the Navy|
|Established||December 12, 1917|
The Mexican Service Medal is an award of the United States military for service in Mexico from 1911 to 1919.
The Mexican Service Medal awarded by the Army was established by General Orders of the United States War Department on December 12, 1917. The Navy's Mexican Service Medal was established by Navy Department General Orders Number 365 on February 11, 1918, as amended by Navy Department General Orders No. 464 of April 27, 1919. The Mexican Service Medal recognizes those servicemen who performed military service against Mexican forces between the dates of April 12, 1911 and June 16, 1919.
To be awarded the Mexican Service Medal, a serviceman was required to perform military duty during the time period of eligibility and in one of the following military engagements.
The United States Navy issued the Mexican Service Medal to the sailors and Marines who participated in any of the above actions, as well as to servicemen who served aboard U.S. naval vessels patrolling Mexican waters between April 21 and November 26, 1914, or between March 14, 1916, and February 7, 1917.
The Mexican Service Medal was also awarded to any servicemen who was wounded or killed while participating in action any against hostile Mexican forces between April 12, 1911, and February 7, 1917.
Although the Mexican Service Medal was a single decoration, the U.S. Army and U.S. Navy issued two different versions of it. The Army version displays an engraving of a yucca plant, while the Navy version depicts the San Juan de Ulúa fortress in Veracruz harbor. Both versions display the annotation "1911 – 1917" on the bottom of the medal.
The Mexican Service Medal was a one-time decoration and there were no service stars authorized for those who had participated in multiple engagements. For those soldiers who had been cited for gallantry in combat, the Citation Star was authorized as a device to the Mexican Service Medal. There were no devices authorized for the Navy's version of the decoration.
A similar decoration, known as the Mexican Border Service Medal also existed for those who had performed support duty to Mexican combat expeditions from within the United States.