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 at state dinners and other official functions, and leads the color guard at various parades and ceremonies. The following streamers are authorized, in order of precedence: Each unit in the Corps of battalion-size or larger also hold an organizational color (which makes up the unit's colors along with the national flag). It is usually identical to the Marine Corps battle color, though the scroll will have the unit's name instead of "United States Marine Corps". It will also bear the streamers authorized to the unit, or scarlet and gold tassels if none are authorized. Each Corps unit has a designated