The battles of the Civil War were fought across the United States from the East Coast to as far west as New Mexico. Beginning in 1861, these battles made a permanent mark upon the landscape and elevated to prominence small towns that had previously been peaceful villages. As a result, names such as Manassas, Sharpsburg, Gettysburg, and Vicksburg became eternally entwined with images of sacrifice, bloodshed, and heroism. It is estimated that over 10,000 battles of various sizes were fought during the Civil War as Union forces marched towards victory. The battles of the Civil War are largely divided into the Eastern, Western, and Trans-Mississippi Theaters, with the bulk of the fighting taking place in the first two. During the Civil War, over 200,000 Americans were killed in battle as each side fought for their chosen cause.
The battles below are arranged by year, theater, and state.
1861
Eastern Theater
- April 12-14: Battle of Fort Sumter, South Carolina
- June 3: Battle of Philippi, Virginia
- June 10: Battle of Big Bethel, Virginia
- July 21: First Battle of Bull Run, Virginia
- October 21: Battle of Ball's Bluff, Virginia
Western Theater
- August 10: Battle of Wilson's Creek, Missouri
- November 7: Battle of Belmont, Missouri
At Sea
- November 8: The Trent Affair, at Sea
1862
Eastern Theater
- March 8-9: Battle of Hampton Roads, Virginia
- March 23: First Battle of Kernstown, Virginia
- April 5: Siege of Yorktown, Virginia
- April 10-11: Battle of Fort Pulaski, Georgia
- May 5: Battle of Williamsburg, Virginia
- May 8: Battle of McDowell, Virginia
- May 25: First Battle of Winchester, Virginia
- May 31: Battle of Seven Pines, Virginia
- June 8: Battle of Cross Keys, Virginia
- June 9: Battle of Port Republic, Virginia
- June 25: Battle of Oak Grove, Virginia
- June 26: Battle of Beaver Dam Creek (Mechanicsville), Virginia
- June 27: Battle of Gaines' Mill, Virginia
- June 29: Battle of Savage's Station, Virginia
- June 30: Battle of Glendale (Frayser's Farm), Virginia
- July 1: Battle of Malvern Hill, Virginia
- August 9: Battle of Cedar Mountain, Virginia
- August 28-30: Second Battle of Manassas, Virginia
- September 1: Battle of Chantilly, Virginia
- September 12-15: Battle of Harpers Ferry, Virginia
- September 14: Battle of South Mountain, Maryland
- September 17: Battle of Antietam, Maryland
- December 13: Battle of Fredericksburg, Virginia
Trans-Mississippi Theater
- February 21: Battle of Valverde, New Mexico
- March 7-8: Battle of Pea Ridge, Arkansas
- March 26-28: Battle of Glorieta Pass, New Mexico
- December 7: Battle of Prairie Grove, Arkansas
Western Theater
- January 19: Battle of Mill Springs, Kentucky
- February 6: Battle of Fort Henry, Tennessee
- February 11-16: Battle of Fort Donelson, Tennessee
- April 6-7: Battle of Shiloh, Tennessee
- April 12: Great Locomotive Chase, Georgia
- April 24/25: Capture of New Orleans, Louisiana
- June 6: Battle of Memphis, Tennessee
- September 19: Battle of Iuka, Mississippi
- October 3-4: Second Battle of Corinth, Mississippi
- October 8: Battle of Perryville, Kentucky
- December 26-29: Battle of Chickasaw Bayou, Mississippi
- December 31-January 2, 1863: Battle of Stones River, Tennessee
1863
Eastern Theater
- May 1-6: Battle of Chancellorsville, Virginia
- June 9: Battle of Brandy Station, Virginia
- July 1-3: Battle of Gettysburg, Pennsylvania
- July 3: Battle of Gettysburg: Pickett's Charge, Pennsylvania
- July 11 & 18: Battles of Fort Wagner, South Carolina
- October 13-November 7: Bristoe Campaign, Virginia
- November 26-December 2: Mine Run Campaign, Virginia
Trans-Mississippi Theater
- January 9-11: Battle of Arkansas Post, Arkansas
Western Theater
- Fall 1862-July 4: Vicksburg Campaign, Mississippi
- May 12: Battle of Raymond, Mississippi
- May 16: Battle of Champion Hill, Mississippi
- May 17: Battle of Big Black River Bridge, Mississippi
- May 18-July 4: Siege of Vicksburg, Mississippi
- May 21-July 9: Siege of Port Hudson, Louisiana
- June 11-July 26: Morgan's Raid, Tennessee, Kentucky, Indiana, & Ohio
- September 18-20: Battle of Chickamauga, Georgia
- October 28-29: Battle of Wauhatchie, Tennessee
- November-December: Knoxville Campaign, Tennessee
- November 23-25: Battle of Chattanooga, Tennessee
1864
Eastern Theater
- February 16: Submarine H.L. Hunley Sinks USS Housatonic, South Carolina
- February 20: Battle of Olustee, Florida
- May 5-7: Battle of the Wilderness, Virginia
- May 8-21: Battle of Spotsylvania Court House, Virginia
- May 11: Battle of Yellow Tavern, Virginia
- May 16: Battle of New Market, Virginia
- May 23-26: Battle of North Anna, Virginia
- May 31-June 12: Battle of Cold Harbor, Virginia
- June 5: Battle of Piedmont, Virginia
- June 9, 1864-April 2, 1865: Siege of Petersburg, Virginia
- June 11-12: Battle of Trevilian Station, Virginia
- June 21-23: Battle of Jerusalem Plank Road, Virginia
- July 9: Battle of Monocacy, Maryland
- July 24: Second Battle of Kernstown, Virginia
- July 30: Battle of the Crater, Virginia
- August 18-21: Battle of Globe Tavern, Virginia
- September 19: Third Battle of Winchester (Opequon), Virginia
- September 21-22: Battle of Fisher's Hill, Virginia
- October 2: Battle of Peebles Farm, Virginia
- October 19: Battle of Cedar Creek, Virginia
- October 27-28: Battle of Boydton Plank Road, Virginia
Trans-Mississippi River
- April 8: Battle of Mansfield, Louisiana
- October 23: Battle of Westport, Missouri
Western Theater
- May 13-15: Battle of Resaca, Georgia
- June 10: Battle of Brice's Cross Roads, Mississippi
- June 27: Battle of Kennesaw Mountain, Georgia
- July 20: Battle of Peachtree Creek, Georgia
- July 22: Battle of Atlanta, Georgia
- July 28: Battle of Ezra Church, Georgia
- August 5: Battle of Mobile Bay, Alabama
- August 31-September 1: Battle of Jonesboro (Jonesborough), Georgia
- November 15-December 22: Sherman's March to the Sea, Georgia
- November 29: Battle of Spring Hill, Tennessee
- November 30: Battle of Franklin, Tennessee
- December 15-16: Battle of Nashville, Tennessee
1865
Eastern Theater
- January 13-15: Second Battle of Fort Fisher, North Carolina
- February 5-7: Battle of Hatcher's Run, Virginia
- March 25: Battle of Fort Stedman, Virginia
- April 1: Battle of Five Forks, Virginia
- April 6: Battle of Sayler's Creek (Sailor's Creek), Virginia
- April 9: Surrender at Appomattox Court House, Virginia
Western Theater
- March 16: Battle of Averasborough, North Carolina
- March 19-21: Battle of Bentonville, North Carolina
- April 2: Battle of Selma, Alabama