Who did the Border States fight for?

The Border States, which included Delaware, Maryland, Kentucky, Missouri, and West Virginia, were slave states that did not secede from the Union during the American Civil War. They largely fought for the Union, although there were significant divisions within these states, with some residents supporting the Confederacy. Their strategic locations and resources were crucial in the conflict, influencing both Union and Confederate military strategies. Ultimately, the loyalties in these states were complex and often shifted throughout the war.