What If?: Mirror Mirror #[nn]

In a twisted turn of history, young Union soldier Stephen Rogers finds himself under the command of Buck Barnes, a man whose Redlegs Regiment preys on civilians and wages war for personal gain. When Rogers tries to protect village children from his own men, he’s gravely wounded—only to awaken transformed by Private Sam Wilson’s mysterious healing and the ancient power of Captain America. Now wielding that legendary strength, Rogers must face the man who once led him: the newly empowered White Skull, Buck Barnes, as their fates collide in a conflict that reshapes the war—and their very souls.