Description

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

Historical Background

The XII Corps Headquarters Flag (Army of the Potomac, 1863 Design) – American Civil War Nylon Series Reproduction Flag honors one of the most active corps in the Union Army. Organized in 1862 under Major General Henry W. Slocum, the XII Corps served with distinction at Antietam, Chancellorsville, and Gettysburg, later joining Sherman’s army for the Atlanta and Carolinas Campaigns. When the Army of the Potomac introduced standardized headquarters flags in 1863, the XII Corps adopted this blue swallow-tailed design featuring a white cross bottony with a red “12” centered within. The flag became the corps’ visual symbol on campaign, representing precision, endurance, and honor on the march to victory.

Design Features

This 3′×5′ swallow-tailed flag features a deep blue field, a large white cross bottony, and a bold red numeral “12.” The design followed the Army of the Potomac’s 1863 pattern for corps headquarters flags, where blue fields denoted corps-level command. The white cross symbolized unity and steadfast faith, while the red number clearly identified the corps in battle. Its swallow-tailed form allowed visibility in high winds, making it an unmistakable command standard above headquarters tents or field formations.

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 for lasting durability and brilliant color. A canvas heading with solid brass grommets provides strength for both indoor and outdoor display. Every flag in this collection is FMAA-certified, guaranteeing authentic American craftsmanship through the Flag Manufacturers Association of America (FMAA). As a result, this reproduction reflects the pride and precision that defined the XII Corps throughout its campaigns.

Explore More Historical and Civil War Flags

Explore our complete line of Historical and Civil War Flags. Each reproduction combines accurate research and careful artistry to preserve the visual legacy of America’s defining conflict. Collectors, historians, and educators alike will appreciate how these faithful designs bring the Civil War era to life.

Learn More About the XII Corps

For an overview of the XII Corps and its service under Generals Slocum and Alpheus S. Williams, visit the XII Corps (Union Army) page. To read a detailed history of the corps’ organization, battles, and legacy, see History of XII Corps. These sources capture how the men of the XII Corps earned distinction across both the Eastern and Western Theaters.