▁squad rons ▁continued ▁their ▁three - pr ong ed ▁advance ▁ 1 6 ▁kilom eters ▁deep ▁into ▁the ▁Camb odia ▁before ▁they ▁ve ered ▁south ▁toward ▁H ậ u ▁N gh ĩ a , ▁and ▁hel ic op ters ▁dropped ▁troops ▁unexpected ly ▁on ▁enemy ▁positions , ▁while ▁other ▁AR V N ▁units ▁conducted ▁rapid ▁operations ▁into ▁the ▁region ▁between ▁ Đ ứ c ▁Hu ệ ▁and ▁G ò ▁D ầ u ▁H ạ . ▁On ▁ 1 0 ▁May , ▁when ▁the ▁last ▁AR V N ▁units ▁returned ▁to ▁their ▁base ▁camp , ▁enemy ▁communic ations ▁and ▁supplies ▁networks ▁were ▁seriously ▁dis rupted . ▁The ▁Commun ists ▁suffered ▁ 1 , 2 0 0 kil led , ▁ 6 5 ▁prisoners , ▁and ▁tons ▁of ▁weapons ▁captured ; ▁while , ▁due ▁to ▁speed , ▁secre cy ▁and ▁coord ination ▁factors ▁of ▁a ▁multi - fac ed ▁operation , ▁the ▁AR V N ▁suffered ▁less ▁than ▁ 1 0 0 ▁cas ual ties . ▁ ▁Ant ic or ruption ▁cz ar ▁Vice ▁President ▁Tr ầ n ▁V ă n ▁H ư ơ ng ▁appointed ▁General ▁Hi ế u ▁ant ic or ruption ▁cz ar ▁on ▁ 1 0 ▁February ▁ 1 9 7 2 . ▁He ▁occupied ▁this ▁position ▁until ▁October ▁ 1 9 7 3 . ▁At ▁that ▁time ▁cor ruption ▁was ▁r amp ant ▁among ▁the ▁AR V N ▁leadership , ▁in ▁the ▁army , ▁the ▁administration , ▁the ▁police , ▁the ▁power ▁authority , ▁Air ▁Vietnam , ▁custom s ,