Daryl,

Here's a short history of this unit:

Regimental History MARYLAND SECOND INFANTRY (Three Years)

Second Infantry. - Cols., John Sommer, Thomas B. Allard; Lieut.-Cols., J. E. Duryee, Henry Howard, Jr., Benjamin F. Taylor; Majs., David P. De Witt, James H. Wilson, Andrew B. Brunner, John M. Santmyer.

The 2nd infantry was organized at Baltimore between the months of June and Sept., 1861, to serve for three years. From the time of its muster in Sept., 1861, to March 26, 1862, it was a part of Gen. Dix's division, Army of the Potomac. It was then in the Department of North Carolina until July 22, when it was attached to the 1st brigade, 2nd division, 9th corps, and served under Gen. Burnside in North Carolina and the Department of the Ohio until June, 1863. It then became a part of the 1st division of the 23d corps until in September, when it returned to its old place in the 9th corps and remained with that command during the remainder of its service. On Jan. 1, 1864, the regiment re-enlisted and the men received the veteran furlough of 30 days. During its service the regiment was in the battles of the second Bull Run, Chantilly, South Mountain, Antietam, Fredericksburg, Blue Springs, Campbell Station, siege of Knoxville, Spottsylvania, Totopotomy, Cold Harbor, around Petersburg, being one of the regiments to engage in the assault on the Conferedate works at the time Burnside's mine was sprung, and was at the surrender of Gen. Lee's army at Appomattox. It was mustered out at Alexandria, Va., July 17, 1865, transported to Baltimore, where the men were paid and on the 25th the regiment disbanded. The total losses amounted to 226 men, 89 of whom were killed in battle and the others died in the hospitals.

Source: The Union Army, vol. 2

Jim Martin