The colors of the Union army, 1861 to 1865.
Union Civil War Flags
Our Civil War flags include Union corps and regimental flags, the 33-, 34- and 35-star U.S. flags of the war years, and the campaign flags of the era. Most are 3x5' nylon with a canvas heading and brass grommets.
20 products on this page
Historical flags have been part of The Flag Guys since the beginning. Our Union Civil War collection brings together the corps and regimental flags of the Union army and the star-count flags of the war years, for collectors, reenactors, museums and anyone flying a flag with family history behind it.
Union Corps and Regimental Flags
The Army of the Potomac identified its corps headquarters with guidons. The 1st Corps was led by Joseph Hooker at Antietam and John Reynolds at Fredericksburg, then by Abner Doubleday at Gettysburg after Reynolds was killed on the first day. Winfield Scott Hancock’s 2nd Corps helped repulse Pickett’s Charge. The 5th Corps included the 20th Maine, which held Little Round Top.
Our regimental flags include the Irish regiments of Massachusetts and New York (the 9th and 28th Massachusetts and the 37th and 69th New York), the 20th New York, the 52nd New York German Rangers, and the 4th Regiment U.S. Colored Troops.
The Stars and Stripes of the War Years
The U.S. flag changed twice during the war. The 33-star flag flew over Fort Sumter in April 1861. The 34-star flag, with Kansas added, became official on July 4, 1861. The 35-star flag, with West Virginia added, followed on July 4, 1863.
We carry each one, along with the 34-star E Pluribus Unum Union support flag.
Campaign and Commanders’ Flags
In the 1860s it was common for candidates to put their portraits and slogans on flags. Our collection includes the Grant and Colfax campaign flag from 1868, the General Burnside flag, and the Civil War hospital flag.
Looking for a regiment we don’t list? Call us at (845) 562-0088. We may be able to have it made.
Frequently Asked Questions About Union Civil War Flags
What flag did the Union army carry in the Civil War?
Union regiments usually carried two flags: the U.S. national flag and a regimental color. The national flag had 34 stars from July 4, 1861, and 35 stars from July 4, 1863, after West Virginia joined the Union.
How many stars were on the American flag during the Civil War?
The flag had 33 stars when the war began in April 1861, which is the star count of the Fort Sumter flag. It went to 34 stars on July 4, 1861, after Kansas became a state, and to 35 stars on July 4, 1863, for West Virginia.
What is a Civil War corps flag?
A corps flag, or guidon, marked the headquarters of an army corps so soldiers could find their command in the field. Our Army of the Potomac guidons include the 1st, 2nd and 5th Corps, which fought at Antietam, Fredericksburg and Gettysburg.
What size are your Civil War flags?
Most of our Civil War flags are 3x5', in printed or dyed nylon, finished with a canvas heading and brass grommets for a standard flagpole. Call us at (845) 562-0088 if you need a different size or a regiment we don't list.