 Complete the following phrase:  In December of the same year, General Robert E. Lees Army of Northern Virginia defeated Union General Ambrose E. Burnsides Army of the Potomac at the Battle of Fredericksburg, where Union forces repeatedly made frontal assaults across open ground against fortified Confederate positions. The string of southern victories came to an end when Robert E. Lee was decisively defeated at the Battle of Gettysburg between 1 and 3 July 1863 by the Army of the Potomac under General George G. Meade. This is regarded by most historians as the turning point of the Civil War. The Retreat from Gettysburg was arduous, and the weakened South Carolinians were defeated again at the Battle of Lookout Mountain in November 1863. The survivors of the original 1st South Carolina would go on to retreat from Union forces at the Battle of Chaffins Farm in September 1864, but in their last major action of the war, the Second Battle of Deep Bottom, they forced a Union retreat. After the 