Description

III Corps Headquarters Flag of 1864 – American Civil War Nylon Series Reproduction Flag

Pride of the Army of the Potomac

The III Corps Headquarters Flag of 1864 stood as a symbol of strength and endurance within the Union Army of the Potomac. Its striking design—a dark-blue swallowtail field with a white diamond and the red numeral “3”—marked the headquarters of a corps renowned for courage and tenacity. This banner flew above encampments and battle lines from the Peninsula to Petersburg, reminding all who saw it of the dedicated soldiers who fought beneath its colors.

Design and Symbolism

The III Corps adopted the diamond badge in 1863 under the direction of General Daniel Butterfield. By the following year, the symbol appeared on headquarters flags, guidons, and uniforms throughout the army. The white diamond represented integrity and clarity of purpose, while the red “3” identified the corps itself. Together, they created a design that was both elegant and instantly recognizable amid the dust and smoke of battle. This flag embodied the pride of one of the Union’s most distinguished commands.

Historical Background

Formed in March 1862, the III Corps served throughout many of the war’s most decisive campaigns, including Yorktown, Fredericksburg, Chancellorsville, and Gettysburg. Its officers and soldiers endured hardship and proved their valor time and again in some of the war’s bloodiest battles. Although the corps was eventually merged into the II Corps in 1864, its flag remained a beloved symbol of the unit’s service and sacrifice. Today, the III Corps diamond continues to represent honor, bravery, and the unity of purpose that defined the Union Army.

Expertly Crafted in the United States

Each flag in the American Civil War Nylon Series is proudly made in the USA using premium all-weather nylon for lasting color and durability. A canvas heading with solid brass grommets ensures strength for both indoor and outdoor display. Every flag is FMAA-certified, confirming authentic American craftsmanship through the Flag Manufacturers Association of America (FMAA). This reproduction honors the quality and integrity that once defined the original battle standards of 1864.

Explore More Historical and Civil War Flags

Expand your collection by visiting our complete line of Historical and Civil War Flags. Each reproduction combines research and precision craftsmanship to preserve America’s Civil War legacy for future generations.

Learn More About the III Corps

To study the history and service of the III Corps within the Union Army, visit the Wikipedia page. It offers insight into its organization, battles, and the men who carried this distinctive diamond-marked flag into combat.