3rd Connecticut Infantry Regiment
|3rd Connecticut Volunteer Infantry|
|Active||May 14, 1861, to August 12, 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 1st Division, McDowell's Army of Northeastern Virginia to August 1861.
The 3rd Connecticut Infantry mustered out of service on August 12, 1861.
Left Connecticut for Washington, D.C., May 19. Duty at Camp Corcoran, defenses of Washington, D.C., until June 1, 1861. Advanced to Vienna and Falls Church, Va., June 1–3, and picket duty there until July 16. Advanced to Manassas, Va., July 16–21. Occupation of Fairfax Court House July 17. Battle of Bull Run, Va., July 21.
- Colonel John L. Chatfield
- Dyer, Frederick H. A Compendium of the War of the Rebellion (Des Moines, IA: Dyer Pub. Co.), 1908.
- McGregor, Jeremiah S. & James G. Vose. Life and Deeds of Dr. John McGregor (Foster, RI: Press of Fry Bros.), 1886.
- Shaw, William H. A Diary as Kept by Wm. H. Shaw, During the Great Civil War, from April, 1861 to July, 1865 (S.l.: s.n.), 1913.
- 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.