Harlingen Texas Mexican Revolution Armed Mexican and U.S. Soldiers 1914 Real Photo Postcard

These soldiers are depicted in early 20th-century United States Army uniforms, characterized by the M1910 olive drab wool service coat, breeches, puttees, and campaign hats. These were standard issue for American servicemen during World War I, a period when the United States dramatically expanded its military forces following its entry into the conflict in April 1917. Their equipment, including rifles and blanket rolls, suggests they are either in training or on maneuvers, common activities for soldiers preparing for deployment.