▁via ▁hel ic opter ▁or ▁foot ▁to ▁eng age ▁the ▁enemy ▁with ▁support ▁of ▁their ▁a ero ▁sc outs ▁and ▁a ero ▁weapons . ▁These ▁teams ▁earned ▁the ▁nick name ▁of ▁" Head h un ters ." ▁This ▁concept ▁differ ed ▁from ▁conventional ▁front ▁line ▁war fare ▁typical ▁in ▁prior ▁land ▁war fare . ▁ ▁During ▁the ▁Vietnam ▁war , ▁the ▁ 1 st ▁of ▁the ▁ 9 th ▁Caval ry ▁earned ▁ 3 ▁President ial ▁Unit ▁cit ations ▁and ▁ 5 ▁Val orous ▁Unit ▁Cit ations . ▁It ▁was ▁in activ ated ▁on ▁ 2 6 ▁February ▁ 1 9 7 3 ▁and ▁was ▁one ▁of ▁the ▁last ▁conventional ▁units ▁to ▁leave ▁Vietnam . ▁In ▁ 1 9 7 1 , ▁as ▁the ▁ 1 st ▁Caval ry ▁Division ▁began ▁re deploy ment ▁to ▁the ▁United ▁States , ▁Tro op ▁F , ▁ 9 th ▁Caval ry ▁was ▁formed ▁from ▁one ▁pl ato on ▁each ▁from ▁the ▁ 1 - 8 ▁Caval ry , ▁ 2 - 5 ▁Caval ry , ▁ 1 - 1 2 ▁Caval ry ▁and ▁ 1 - 7 ▁Caval ry . ▁This ▁unit ▁operated ▁independently ▁of ▁the ▁ 1 - 9 ▁Caval ry . ▁Tro op ▁F ▁was ▁in activ ated ▁in ▁Vietnam ▁on ▁ 2 6 ▁February ▁ 1 9 7 3 . ▁▁ 1 9 7 6 ▁to ▁ 1 9 8 1 ▁ ▁The ▁ 2 d ▁Squadron , ▁ 9 th ▁Caval ry ▁was ▁assigned ▁to ▁the ▁far ▁end ▁of ▁the ▁run ways