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Abraham Lincoln is elected sixteenth president of the United States, the first Republican president in the nation who represents a party that opposes the spread of slavery in the territories of the United States.
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South Carolina secedes from the Union.
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Six additional southern states secede from the Union.
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Southern forces fire upon Fort Sumter, South Carolina. The Civil War has formally begun.
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President Lincoln issues a public declaration that an insurrection exists and calls for 75,000 militia to stop the rebellion. As a result of this call for volunteers, four additional southern states secede from the Union in the following weeks. Lincoln will respond on May 3 with an additional call for 43,000+ volunteers to serve for three years, expanding the size of the Regular Army.
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Battle of Big Bethel, the first land battle of the war in Virginia.
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The Battle of Bull Run is fought near Manassas, Virginia. The Union Army under General Irwin McDowell initially succeeds in driving back Confederate forces under General Pierre Gustav Toutant Beauregard, but the arrival of troops under General Joseph E. Johnston initates a series of reverses that sends McDowell's army in a panicked retreat to the defenses of Washington. It is here that Thomas Jonathan Jackson, a professor at VMI, will receive everlasting fame as "Stonewall" Jackson.
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Battle of Ball's Bluff, Virginia. Colonel Edward D. Baker, senator from Oregon and a friend of President Lincoln, led troops across the Potomac River only to be forced back to the river's edge where he was killed. The ensuing Union withdrawal turned into a rout with many soldiers drowning while trying to re-cross the icy waters of the Potomac River.
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Battle of Mill Springs, Kentucky. The Union victory weakened the Confederate hold on the state.
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Surrender of Fort Henry, Tennessee. The lost of this southern fort on the Tennessee River opened the door to Union control of the river.
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Surrender of Fort Donelson, Tennessee. This primary southern fort on the Cumberland River left the river in Union hands. It was here that Union General Ulysses S. Grant gained his nickname "Unconditional Surrender".
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The Battle of Shiloh was the first major battle in Tennessee. Confederate General Albert Sidney Johnston, a veteran of the Texas War of Independence and the War with Mexico considered to be one of the finest officers the South has, is killed on the first day of fighting. The Union victory further secures the career of Union General Ulysses S. Grant.
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The Emancipation Proclamation goes into effect. Applauded by many abolitionists including Frederick Douglass, there are others who feel it does not go far enough to totally abolish slavery.
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General Simon Bolivar Buckner enters into terms for surrender of the Army of the Trans-Mississippi, which are agreed to on June 2, 1865.The Civil War officially ends.