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Virginia secedes from the Union, followed within five weeks by Arkansas, Tennessee, and North Carolina, thus forming an eleven state Confederacy with a population of 9 million, including nearly 4 million slaves. The Union will soon have 21 states and a population of over 20 million.
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Gen. Robert E. Lee assumes command, replacing the wounded Johnston. Lee then renames his force the Army of Northern Virginia. McClellan is not impressed, saying Lee is "likely to be timid and irresolute in action
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At 4:30 a.m. Confederates under Gen. Pierre Beauregard open fire with 50 cannons upon Fort Sumter in Charleston, South Carolina. The Civil War begins.
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April 15, 1861 - President Lincoln issues a Proclamation calling for 75,000 militiamen, and summoning a special session of Congress for July 4.
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The Union Army under Gen. Irvin McDowell suffers a defeat at Bull Run 25 miles southwest of Washington. Confederate Gen. Thomas J. Jackson earns the nickname "Stonewall," as his brigade resists Union attacks. Union troops fall back to Washington. President Lincoln realizes the war will be long. "It's damned bad," he comments.
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July 27, 1861 - President Lincoln appoints George B. McClellan as Commander of the Department of the Potomac, replacing McDowell.
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Confederate surprise attack on Gen. Ulysses S. Grant's unprepared troops at Shiloh on the Tennessee River results in a bitter struggle with 13,000 Union killed and wounded and 10,000 Confederates, more men than in all previous American wars combined. The president is then pressured to relieve Grant but resists. "I can't spare this man; he fights," Lincoln says.
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Confederate dead by the fence bordering Farmer Miller's 40 acre Cornfield at Antietam where the intense rifle and artillery fire cut every corn stalk to the ground "as closely as could have been done with a knife."
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Army of the Potomac under Gen. Burnside suffers a costly defeat at Fredericksburg in Virginia with a loss of 12,653 men after 14 frontal assaults on well entrenched Rebels on Marye's Heights. "We might as well have tried to take hell," a Union soldier remarks. Confederate losses are 5,309
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President Lincoln issues the final Emancipation Proclamation freeing all slaves in territories held by Confederates and emphasizes the enlisting of black soldiers in the Union Army. The war to preserve the Union now becomes a revolutionary struggle for the abolition of slavery.
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The president appoints Gen. Joseph (Fighting Joe) Hooker as Commander of the Army of the Potomac, replacing Burnside.
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The South suffers a huge blow as Stonewall Jackson dies from his wounds, his last words, "Let us cross over the river and rest under the shade of the trees."
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President Lincoln appoints Gen. George G. Meade as commander of the Army of the Potomac, replacing Hooker. Meade is the 5th man to command the Army in less than a year.
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Vicksburg, the last Confederate stronghold on the Mississippi River, surrenders to Gen. Grant and the Army of the West after a six week siege. With the Union now in control of the Mississippi, the Confederacy is effectively split in two, cut off from its western allies.
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The president meets with abolitionist Frederick Douglass who pushes for full equality for Union 'Negro troops.'