'4-word term for Gen. McClellan's Union forces that guarded D.C. against invasion across a certain river'
Army of the Potomac
AN ARM OR A LEG: 4-word term for Gen. McClellans Union forces that guarded D.C. against invasion across a certain river
4-word term for Gen. McClellan's Union forces that guarded D.C. against invasion across a certain river
4-word term for Gen. McClellan's Union forces that guarded D.C. against invasion across a certain river
AN "ARM" OR A "LEG"
Army of the Potomac
AN "ARM" OR A "LEG"