Congressman Daniel Sickles[i][2] and established as part of the Excelsior Brigade which fought with the Union Army during multiple key engagements of the American Civil War, including the Chancellorsville, Gettysburg and Overland campaigns.

[4] It was subsequently attached to Sickles' Brigade, Division of the Potomac, until October, 1861.

Then, it was reassigned to Sickles' Brigade, Hooker's Division, Army of the Potomac, until March 1862.

It finished the war in the 4th Brigade, 3rd Division, Second Army Corps, until July 1864.

The regiment lost during service 9 officers and 181 enlisted men killed and mortally wounded, and 2 officers and 62 enlisted men by disease for a total of 254 fatalities.