3rd United States Infantry

In Texas till March, 1861. Companies "C" and "E" moved to New York March, 1861, and Companies "B," "D," "G," "H" and "K" to New York March 19-April 25, 1861. Companies "C" and "E" moved to Fort Pickens, Fla., arriving there April 16, 1861, and duty there till June, 1862. Action on Santa Rosa Island, Fla., October 9, 1861. Bombardment of Fort Pickens November 22-23. Fort Barrancas January 1, 1862. Fort Pickens May 9-12. Rejoined Regiment in Army Potomac June, 1862. Companies "A," "F" and "I" surrendered at Mattagorda Bay, Texas, April 26, 1861. Companies "F" and "I" Joined Regiment at Washington February, 1862. Companies "B," "D," "G," "H" and "K" moved from Fort Hamilton, N.Y. Harbor, to Washington, D. C., May 9, 1861, and duty there till March, 1862. Attached to Porter's Brigade, Hunter's Division, McDowell's Army of Northeast Virginia, to August, 1861. Porter's City Guard, Washington, D.C., to March, 1862. Sykes' Regular Infantry, Reserve Brigade, Army Potomac, to May, 1862. 1st Brigade, 2nd Division, 5th Army Corps, Army Potomac, to August, 1863. Dept. of the East, to October, 1864. Defences of Washington, D.C., 22nd Army Corps, to February, 1865. Headquarters Army Potomac, to May, 1865. Defences of Washington, 22nd Corps, to October, 1865.

SERVICE. – Advance on Manassas, Va., July 16-21, 1861. Battle of Bull Run July 21. Duty at Washington till March, 1862. Moved to the Virginia Peninsula March, 1862. Siege of Yorktown April 5-May 4. Seven days before Richmond June 25-July 1. Battles of Mechanicsville June 26; Gaines' Mill June 27; Turkey Bridge June 30; Malvern Hill July 1. At Harrison's Landing till August 16. Moved to Fortress Monroe, thence to Centreville August 16-28. Pope's Campaign in Northern Virginia August 28-September 2. Battles of Groveton August 29; Bull Run August 30. Maryland Campaign September 6-22. Battle of Antietam September 16-17. Shepherdstown Ford September 19-20. At Sharpsburg till October 29. Kearneysville and Shepherdstown October 16-17. Moved to Falmouth, Va., October 29-November 19. Battle of Fredericksburg, Va., December 12-15. "Mud March" January 20-24, 1863. Chancellorsville Campaign April 27-May 6. Battle of Chancellorsville May 1-5. Gettysburg (Pa.) Campaign June 11-July 24. Battle of Gettysburg, Pa., July 1-3. Pursuit of Lee July 5-24. At New York City during draft disturbances August 21-September 14. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. Ordered to New York December, 1863, and duty at Forts Richmond, Hamilton and Columbus, N.Y. Harbor, till October, 1864. Ordered to Washington, D.C., and duty there till February, 1865. Ordered to City Point, Va., and duty at Headquarters, Army of the Potomac, to May, 1865. Fall of Petersburg April 2. Moved to Washington, D.C., May, and duty there till October, 1865. Grand Review May 23.

Regiment lost during service 2 Officers and 39 Enlisted men killed and mortally wounded and 48 Enlisted men by disease. Total 89.

SOURCE: Frederick H. Dyer, A Compendium of the War of the Rebellion, Part 3, p. 1710-1