On April 6, 1862, a pivotal moment unfolded in the dense forests of Tennessee, marking one of the bloodiest and most shocking battles in U.S. history.

In 1862, contrast emerged between the Union's control of the Confederate's western half and the east. Lee prepared an incursion into Union territory.

Retold at a tactical level, experts examine the methods of the Confederates and the Union forces in this exploration of the War Between the States.

Gettysburg is a turning point in the war. The Union's eventual control here would be a defining moment that impacted the trajectory of the entire war.

Union and Confederate armies fought in a bloody battle. Victories had bolstered Union forces, but the Confederates earned a hard-fought victory.

The year 1864 marked the fourth year of the war, and after major Union victories, President Abraham Lincoln looked to bring a swift end to the war.