Question: What battle was fought by Greenwich Union soldiers, in which General Mead's Army of the Potomac defeated General Lee's North Virginia Army resulting in the largest number of casualties in a single war?
Sentence (from "Battle of Aquia Creek"): The Battle of Aquia Creek was an exchange of cannon fire between Union Navy gunboats and Confederate shore batteries on the Potomac River at its confluence with Aquia Creek in Stafford County, Virginia.
Relevant evidence: No