6 3 , ▁in ▁L oud oun ▁County , ▁Virginia , ▁as ▁part ▁of ▁the ▁G ett ys burg ▁Camp aign ▁of ▁the ▁American ▁Civil ▁War . ▁ ▁Maj . ▁Gen . ▁J . E . B . ▁Stuart ' s ▁caval ry ▁screen ed ▁Gen . ▁Robert ▁E . ▁Lee ' s ▁Confeder ate ▁inf antry ▁as ▁it ▁march ed ▁north ▁in ▁the ▁Sh en ando ah ▁Valley ▁behind ▁the ▁shelter ing ▁Blue ▁R idge ▁Mountains . ▁The ▁purs uing ▁Union ▁caval ry ▁of ▁Brig . ▁Gen . ▁Jud son ▁Kil pat rick ' s ▁brig ade , ▁in ▁the ▁advance ▁of ▁Brig . ▁Gen . ▁David ▁Mc M . ▁Gre gg ' s ▁division , ▁encountered ▁Col . ▁Thomas ▁T . ▁Mun ford ' s ▁tro op ers ▁near ▁the ▁village ▁of ▁Ald ie , ▁resulting ▁in ▁four ▁hours ▁of ▁stub born ▁fighting . ▁Both ▁sides ▁made ▁mounted ▁assault s ▁by ▁reg iments ▁and ▁squad rons . ▁Kil pat rick ▁was ▁rein for ced ▁in ▁the ▁afternoon , ▁and ▁Mun ford ▁finally ▁with d rew ▁toward ▁Middle burg . ▁ ▁Background ▁Late ▁in ▁the ▁spring ▁of ▁ 1 8 6 3 ▁t ensions ▁grew ▁between ▁Union ▁commander ▁Joseph ▁Hook er ▁and ▁his ▁caval ry ▁commander ▁Brig . ▁Gen . ▁Alfred ▁Ple as ont on ▁because ▁of ▁the ▁latter ' s ▁in ability ▁to ▁pen et rate ▁Maj . ▁Gen . ▁J . E . B . ▁Stuart ' s ▁caval ry ▁screen ▁and ▁gain ▁access ▁to ▁the ▁Sh en ando ah