What was the military action in the civil war?

The military action during the American Civil War (1861-1865) involved a series of large-scale battles and campaigns between the Union (Northern states) and the Confederacy (Southern states). Key battles included Gettysburg, Antietam, and Vicksburg, with significant strategies such as total war employed by Union General William Tecumseh Sherman. The war saw advancements in military technology, including rifled muskets and ironclad ships, which changed the nature of combat. Ultimately, Union victories led to the defeat of the Confederacy and the preservation of the United States.