▁red es ign ated ▁as ▁Tro op ▁C , ▁ 9 th ▁Caval ry ▁and ▁react iv ated ▁on ▁ 1 ▁February ▁ 1 9 6 4 ▁at ▁Br istol ▁with ▁the ▁ 1 5 7 th ▁Infantry ▁Brigade . ▁The ▁tro op ▁was ▁moved ▁to ▁Wil kes - Bar re ▁on ▁ 3 1 ▁January ▁ 1 9 6 6 . ▁The ▁tro op ▁continued ▁to ▁serve ▁with ▁the ▁ 1 5 7 th ▁Infantry ▁Brigade ▁( M ech ) ▁until ▁de activ ation ▁on ▁ 2 0 ▁August ▁ 1 9 9 5 . ▁ ▁The ▁ 4 th ▁Re con na issance ▁Squadron , ▁ 9 th ▁Caval ry ▁was ▁assigned ▁to ▁the ▁Army ▁Reserve ▁and ▁activ ated ▁on ▁ 2 0 ▁March ▁ 1 9 5 9 ▁at ▁Mans field , ▁Ohio ▁as ▁the ▁divis ional ▁reconna issance ▁squad ron ▁of ▁the ▁ 8 3 rd ▁Infantry ▁Division . ▁The ▁squad ron ▁became ▁the ▁ 4 th ▁Squadron , ▁ 9 th ▁Caval ry ▁( 4 - 9 ▁Caval ry ) ▁on ▁ 1 5 ▁April ▁ 1 9 6 3 , ▁but ▁was ▁in activ ated ▁on ▁ 3 1 ▁December ▁ 1 9 6 5 . ▁On ▁ 2 4 ▁November ▁ 1 9 6 7 ▁it ▁was ▁react iv ated ▁as ▁a ▁Reg ular ▁Army ▁unit ▁with ▁the ▁ 6 th ▁Infantry ▁Division ▁at ▁Fort ▁Campbell . ▁▁ ▁The ▁squad ron ▁was ▁react iv ated ▁in ▁April , ▁ 1 9 8 6 , ▁at ▁L