Every battle fought by the Army of Northern Virginia was against the Union army.
Soldiers fought for the unions in the battle of shiloh.
The Union
The battle of the Front Royal was billed as brother against brother because all of the troops were from Maryland and fought against each other. The troops that fought were the First Maryland CSA and the Kenly's Union Marlanders.
America fought itself it was North against the South. The North was the Union and the South was the Confederates.
Atlanta would be taken over if the Union had lost.
The Battle of Peachtree Creek, fought on July 20, 1864, was crucial in the Atlanta Campaign during the American Civil War. It marked a significant Union victory that thwarted Confederate General John Bell Hood's attempt to disrupt Union forces advancing towards Atlanta. This battle helped to solidify Union control over key positions around the city, ultimately contributing to the fall of Atlanta, which was a major logistical and morale boost for the Union. The battle demonstrated the effectiveness of Union tactics and the challenges faced by Confederate forces in defending their territory.
ANSWER The battle of Fredericksburg
Because they wanted to.
Probably most of the states were represented there. It was the Army of Northern Virginia (Confederate) under Lee against the Army of the Potomac (Union) under the newly-promoted Meade. It was a Union victory.
there was 39,830 soldiers on the Union side in battle of shiloh
Both Antietam and Gettysburg were fought in Union states, in the East; Perryville in the West.