Union reinforcements prevented from reaching Chancellorsville at Battle of Salem Church

Major-General John Sedgwick, ordered to join Hooker at Chancellorsville, first took Marye's Heights and then moved to the vicinity of Salem Church, four miles west of Fredericksburg.  There he was met in the evening by a Confederate blocking force which repelled all his frontal attacks.  The next morning, Confederate reinforcements arrived to drive Sedgwick back across the Rappahannock and reoccupy Marye's Heights. (By John Osborne)