He was raiding northern areas like previous times- but not scouting for the lee's army to warn about northern troops- so failed Lee. Union Buford's calvary was doing vital scouting job- located southern army units entering Gettysburg, counted them, noted direction of travel and basic condition, equipment and sent reports back to Union Army so they knew where to go to fight- and then Buford calvary dismounted in best defensive ground available and used their Spencer repeater rifles to stop confederate units advance, forced fight to delay confederates until Union Army units could attack the next day. If Stuarts calvary had done the same to Union- find, report back and then delaying skirmish for a day- the Confederate main Army would have had the high ground at Gettysburg and would have the defensive advantage that Lee used so well in some previous battles. Glory raider or disciplined calvary scout duty for army, Stuart or Buford-- Which Army being served by which calvary was served better???