Col. Joshua Chamberlain and the 20th Maine on Little Round Top defending the left of the Union line.

Buford with his brigade commanders, Devin and Gamble, discuss the impending battle.

Brigadier General Richard Garnett leading his brigade of Pickett's Division, attacking the Union Center.

Soldiers of the Fiftieth New York Engineers try unsuccessfully to complete their pontoon bridge under fire.

Major General George G. Meade speaks to Major General Winfield S. Hancock of the Second Corps.

Major General John Bell Hood confers with Lieut. General James Longstreet about a flank attack on Little Round Top

Stonewall Jackson with a portion of his staff in the Shenandoah Valley.

Federals and Confederates clash from Houck’s Ridge, through the Valley of Plum Run, to the slopes of Little Round Top.

Brig. Gen. Richard Taylor reports to Maj. Gen. T. J. "Stonewall" Jackson.

Confederate General James Longstreet surveys Union defenses just prior to Pickett’s Charge.

At less than fifty yards, the men of Col. Pat Kelly’s famed Irish Brigade prepare to fire their first volley into the South Carolinians.

The 6th Wisconsin Vol. Inf. Regiment charges the 2nd Mississippi Vol. Inf. Regiment.