United States Marine Corps A decade later, in the Mexican–American War (1846–1848), the Marines made their famed assault on Chapultepec Palace in Mexico City, which would be later celebrated as the "Halls of Montezuma" in the Marines' hymn. In the 1850s, the Marines would see further service in Panama and Asia, attached to Matthew Perry's East India Squadron on its historic trip to the Far East. The Marine Corps played a small role in the Civil War (1861–1865); their most prominent task was blockade duty. As more and more states seceded from the Union, about a third of the Corps' officers left the United
Flag of the United States Marine Corps designated gold and scarlet as the official colors of the U.S. Marine Corps. These colors, however, were not reflected in the official Marine Corps standard until 18 January 1939, when a new design incorporating the new colors was approved. The design was essentially that of today's Marine Corps standard. For a brief time following World War I, the inscribing of battle honors directly on the colors of a unit was in practice, but realization that a multiplicity of honors and the limited space on the colors made the system impractical, and the procedure was discontinued. On 29 July 1936, a