gettysburg civil war
Lee at Gettysburg. In the small Pennsylvania town of Gettysburg, 3,000 Union soldiers prepare to face the onslaught of 60,000 advancing Confederate soldiers. Introduction. The Battle of Gettysburg, fought from July 1 to July 3, 1863, is considered the most important engagement of the American Civil War. After a great victory over Union forces at Chancellorsville, General Robert E. Lee marched his Army of Northern Virginia into Pennsylvania in late June 1863.