Men and gun of 3d Massachusetts Heavy Artillery at ornamental gate of Fort Totten in Washington, D.C.

St. Georges Episcopal church and Court House on Princess Anne Street in Fredericksburg, VA

A home in Fredericksburg, VA showing destruction houses suffered by the bombardment on Dec. 13, 1862

General Grant with his family at his headquarters at City Point, VA

Confederate dead behind the stone wall of Marye's Heights, Fredericksburg, Va., killed during the Battle of Chancellorsville, May 1863

Company F, 3d Regiment Massachusetts Heavy Artillery at Fort Stevens, Washington, D.C.

Signal Corps officers lowering flag at their camp near Georgetown; General Albert J. Myer, in civilian dress, at right of pole

City Hotel (Gatsby's Tavern) in Alexandria, VA

Unburied dead on the battlefield of Gaines Mill near Richmond, VA

Possibly the most famous photo from Gettysburg - The Gettysburg Sniper - the dead soldier in this photo was moved to this location and posed for this shot

The Aqueduct bridge and Georgetown from Arlington, VA

A dead Confederate soldier in Gettysburg dear Devil's Den. It has been pretty much confirmed that this is the soldier that Alexander Gardner dragged to the sniper's den.

A dead confederate soldier in the trenches at Petersburg, VA

A dead confederate artillerist Petersburg, VA

A dead confederate soldier in the trenches at Petersburg, VA

A dead confederate soldier in the trenches at Petersburg, VA

Headquarters of the United States Sanitary Commission in Gettysburg following the battle.

General Grant's Headquarters at City Point, VA

General Grant looking over General Meade's shoulder as they look at a map while stopped at the Massaponax Church, near Spotsylvania, VA

Soldiers looking over the dead at the Bloody Lane in Antietam (Sharpsburg)