| Excelsior Brigade (2nd Brigade) | |
|---|---|
 The insignia of the Excelsior Brigade | |
| Active | 1861 – 1864 |
| Allegiance | Union Army |
| Type | Brigade |
| Size | 4 - 6 regiments |
| Part of | Army of the Potomac
|
| Nickname(s) | Excelsior Brigade |
| Engagements | American Civil War |
| Commanders | |
| Notable commanders | Daniel E. Sickles William R. Brewster |
The Excelsior Brigade was a military unit in the Union Army during the American Civil War. Mainly composed of infantry regiments raised in the state of New York primarily by former U.S. Representative Daniel Sickles, the brigade served in several of the Army of the Potomac's most important battles in the Eastern Theater, including Chancellorsville and Gettysburg.