 A reconnaissance in force by Confederate Lt. Gen. Richard S. Ewell at Harris farm on May 19 was a costly and pointless failure.On May 21, Grant disengaged from the Confederate Army and started southeast on another maneuver to turn Lee's right flank, as the Overland Campaign continued toward the Battle of North Anna.In March 1864, Grant was summoned from the Western Theater, promoted to lieutenant general, and given command of all Union armies.