|2nd Connecticut Infantry Regiment|
|Active||May 7, 1861 - August 7, 1861|
|Engagements||First Battle of Bull Run|
The regiment was attached to Mansfield's command, Department of Washington, to June 1861. Key's 1st Brigade, Tyler's Division, McDowell's Army of Northeastern Virginia to August 1861.
The 2nd Connecticut Infantry mustered out of service on August 7, 1861.
Left Connecticut for Washington, D.C., May 19. Duty at Fort Corcoran, defenses of Washington, D.C., until June 1. Advanced to Vienna and Falls Church, Virginia, June 1–3, and picket duty there until July 16. Advanced on Manassas, Virginia, July 16–21. Occupation of Fairfax Court House July 17. Battle of Bull Run July 21.
- Colonel Alfred Howe Terry
- Dyer, Frederick H. A Compendium of the War of the Rebellion (Des Moines, IA: Dyer Pub. Co.), 1908.
- Lucke, Jerome B. History of the New Haven Grays from Sept. 13, 1816, to Sept. 13, 1876 (New Haven, CT: Tuttle, Morehouse & Taylor, Printers), 1876.
- Tyler, Elnathan B. "Wooden Nutmegs" at Bull Run: A Humorous Account of Some of the Exploits and Experiences of the Three Months Connecticut Brigade, and the Part They Bore in the National Stampede (Hartford, CT: G. L. Coburn), 1872.