Federal forces win a minor victory in western Virginia and secure the railroad line between Washington and the West.
The first land battle of the war takes place in northern Virginia, and Confederates blockade the Potomac waterway into Chesapeake Bay.
William S. Harney is ousted as Federal commander in Missouri, leaving his successor free reign to make war on secessionists in the state.
Benjamin F. Butler causes another controversy, this time by refusing to return fugitive slaves to their masters. This sets a wartime precedent.
Letter from 2nd Lt. Thomas Lightfoot, 6th Alabama Volunteer Infantry, to his cousin.
George B. McClellan orders Federal troops across the Ohio River to begin anticipated incursion into predominantly Unionist western Virginia.