Answer:
The Battle of Fort Sumter (April 12–13, 1861) was the bombardment of Fort Sumter near Charleston, South Carolina by the South Carolina militia (the Confederate Army did not yet exist), and the return gunfire and subsequent surrender by the United States Army, that started the American Civil War.
Fought on September 17, 1862, Antietam was the bloodiest single-day battle in American history with over 23,000 casualties (men listed as killed, wounded, captured or missing) in roughly 12 hours. The battle ended the Confederate invasion of Maryland in 1862 and resulted in a Union victory.
The Siege of Vicksburg was a great victory for the Union. It gave control of the Mississippi River to the Union. Around the same time, the Confederate army under General Robert E. Lee was defeated at the Battle of Gettysburg. These two victories marked the major turning point of the Civil War in favor of the Union.
Was fought July 1–3, 1863, in and around the town of Gettysburg, Pennsylvania, by Union and Confederate forces during the American Civil War, Union Maj. General George Meade's Army of the Potomac defeated attacks by Confederate Gen. Robert E. Lee's Army of Northern Virginia, halting Lee's invasion of the North.
Battle Of Atlanta Summary: The Battle of Atlanta was fought on July 22, 1864, just southeast of Atlanta, Georgia. Union forces commanded by William T. Sherman, wanting to neutralize the important rail and supply hub, defeated Confederate forces defending the city under John B. Hood.
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