Antietam had the highest casualties in a single day. No battle the US has ever fought produced so many single day casualties. This battle had serious consequences.
For the battle with the most serious consequences, you could pick either Vicksburg or Gettysburg, which happened on the same day. A pretty bad Fourth of July for the Confederates.
Clearly in terms of casualties, the Battle of Antietam saw more casualties in a single day then any battle in US history.
The Confederate loss at Gettysburg has some mitigating factors. Lee successfully removed Union forces out of Virginia. He disrupted any plans for a Summer offensive against Richmond. His army lived for a month or so on foraging for food in enemy territory and had captured a large quantity of supplies he took with him back to Virginia. And, despite being surprised, which ended his plan to fight at a place of his time and choosing, his army was not destroyed and lived to fight another day (s).
Perhaps the most famous is the sea battle against the Spanish Armada.
The Battle of Gettysburg Is considered the turning point of the Civil War because the Confederates had previously won a considerable amount of battles, and after that, Union took control of the war.
There were many big battles in the Civil War, including: The Battle of Chancellorsville The Battle of Fredericksburg The Siege of Vicksburg But the most important battle of the Civil War was the Battle of Gettysburg, July 1 - 3, 1863. The first battle that General Robert E. Lee lost.
The U.S. Civil War is the most commonly reenacted, with the Battle of Gettysburg being the battle most reenacted (Yearly).
The Battle of Hampton Roads (Battle of the Monitor and Merrimack ) .
The Civil War battle of Sharpsberg as America's most costly battle whit about 23,00 casualities.
Perhaps the most famous is the sea battle against the Spanish Armada.
The single most costly battle of the War of the Rebellion was Gettysburg, with nearly 60,000 killed or wounded during the three days of that sanguine contest.
battle of Gettysburg
In warfare the war which is most costly to US lives is the US Civil War.
The Battle of Gettysburg Is considered the turning point of the Civil War because the Confederates had previously won a considerable amount of battles, and after that, Union took control of the war.
I think Gettysburg.
ckickamauga effected the war because as it was faught during the civil war in a georgia forest, the battle of Chickamauga was one of the most impressive confederate victories in the Civil War. And it was also one of the most costly because more than 34,00 men in the two armies were reported (KIA) Killed In Action,(WIA) Wounded In Action, and (MIA) Missing In Action.
Technically it depends on what you mean by most famous The Battle of Gettysburg had the highest death count of about 43,000 also the Seven days war was a battle that was quite famous in the civil war
seminole war
There were many big battles in the Civil War, including: The Battle of Chancellorsville The Battle of Fredericksburg The Siege of Vicksburg But the most important battle of the Civil War was the Battle of Gettysburg, July 1 - 3, 1863. The first battle that General Robert E. Lee lost.
the first battle of the civil war was the Battle of Fort Sumter.