The first union victory of the civil war came at bull run. antietam. chancellorsville. fort sumter.

Antietam was the first Union Victory of the Civil War

Explanation:

Antietam.

Explanation:

It was the first battle fought on the north in Union soil. It engages the forces of the Confederacy General Robert E. Lee against the Union General Geroge B. McClellan.

The battle was fought on September 17 and it was the bloodiest day of the war with almost 23,000 casualties and wounded combined.

The defensive strategy of McClellan managed to stopped the march of Lee´s army and made him retreat to Virginia and abandoned their thoughts of invasion to Union soil. It was seen as a strategic victory by the Union and help to encourage the troop´s morale.

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