Description

XI Corps Headquarters Flag (Army of the Potomac 1863 Design) – American Civil War Nylon Series Reproduction Flag

Historical Background

The XI Corps Headquarters Flag (Army of the Potomac 1863 Design) – American Civil War Nylon Series Reproduction Flag represents one of the most distinctive banners carried by Union headquarters units. Organized in September 1862, the XI Corps served with distinction under Major Generals Franz Sigel and Oliver O. Howard. Its troops fought at Chancellorsville, Gettysburg, and later in the Chattanooga Campaign before joining Sherman’s Atlanta Campaign. In 1863, the Army of the Potomac standardized corps headquarters flags, introducing this bold blue swallow-tailed design with a white cross-bottony device and a red “11” at its center. The pattern symbolized command authority and helped soldiers instantly identify their corps headquarters in the chaos of battle.

Design Features

This 3′×5′ swallow-tailed flag features a deep navy-blue field with a broad white cross bottony in the center and a red numeral “11.” The cross shape signified corps-level command under the 1863 Army of the Potomac regulations, while the bright red number made the XI Corps easily recognizable among the other Union formations. The flag’s balanced form and vivid colors made it an ideal visual marker over tents, wagons, and field headquarters. Though simple in appearance, it reflected the organizational pride and unity of a corps whose service spanned both the Eastern and Western Theaters.

Expertly Crafted in the United States

Each flag in the American Civil War Nylon Series is proudly made in the USA from premium all-weather nylon that ensures rich color, durability, and graceful flight. A canvas heading with solid brass grommets reinforces strength for either indoor or outdoor display. Every flag in this series is FMAA-certified, guaranteeing authentic American workmanship through the Flag Manufacturers Association of America (FMAA). Accordingly, this reproduction embodies the same patriotic dedication once displayed by the soldiers of the XI Corps.

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Visit our full collection of Historical and Civil War Flags to explore other authentic reproductions. Each design is the result of careful research and faithful craftsmanship, preserving America’s Civil War heritage for collectors, historians, and educators alike.

Learn More About the XI Corps

To study the distinguished history of the XI Corps, visit the XI Corps (Union Army) page. For additional background on the unit’s organization and campaigns, explore My Civil War – XI Corps. These sources trace the corps from its early formation under General Sigel through its critical role at Gettysburg and beyond.