Mclellan's Failure

The civil war was one of the biggest battles in american history.America’s worst clash of army’s,The civil war (1861-65) made the union against the confederate states.”In the spring of 1861, decades of simmering tensions between the northern and southern United States over issues including states’ rights versus federal authority, westward expansion and slavery exploded into the American Civil War.””In 1854, the U.S. Congress passed the KANSAS-NEBRASKA Act, which essentially opened all new territories to slavery by asserting the rule of popular sovereignty over congressional edict.” On April 12, after Lincoln ordered a fleet to resupply Sumter, Confederate artillery fired the first shots of the Civil War. Sumter’s commander, Major Robert Anderson,

Total casualties at Antietam numbered 12,410 of some 69,000 troops on the Union side, and 13,724 of around 52,000 for the Confederates. The Union victory at Antietam would prove decisive, as it halted the Confederate advance in Maryland and forced Lee to retreat into Virginia. Still, McClellan’s failure to pursue his advantage earned him the scorn of Lincoln and Halleck, who removed him from command in favor of Ambrose E. Burnside. Burnside’s assault on Lee’s troops near Fredericksburg on December 13 ended in heavy Union casualties and a Confederate victory; he was promptly replaced by Joseph “Fighting Joe” Hooker, and both armies settled into winter quarters across the Rappahannock River from each other.””Lee then moved his troops northwards and split his men, sending Jackson to meet Pope’s forces near Manassas, while Lee himself moved separately with the second half of the army. On August 29, Union troops led by John Pope struck Jackson’s forces in the Second Battle of Bull Run (Second Manassas). The next day, Lee hit the Federal left flank with a massive assault, driving Pope’s men back towards