▁War , ▁it ▁evol ved ▁to ▁become ▁the ▁ 6 0 0 th ▁Regiment , ▁Royal ▁Art illery ▁( 5 th ▁Battalion ▁The ▁Duke ▁of ▁Well ington ' s ▁Regiment ) ▁in ▁ 1 9 4 4 , ▁and , ▁after ▁the ▁war , ▁the ▁ 5 7 8 th ▁( 5 th ▁Battalion ▁The ▁Duke ▁of ▁Well ington ' s ) ▁He avy ▁Anti - A ircraft ▁Regiment , ▁Royal ▁Art illery ▁in ▁ 1 9 4 7 . ▁It ▁then ▁am alg am ated ▁with ▁the ▁ 3 8 2 nd ▁Med ium ▁Regiment , ▁Royal ▁Art illery ▁( D u ke ▁of ▁Well ington ' s ▁Regiment ) ▁in ▁ 1 9 5 5 , ▁a ▁unit ▁which ▁converted ▁back ▁to ▁form ▁the ▁West ▁R iding ▁Battalion , ▁The ▁Duke ▁of ▁Well ington ' s ▁Regiment ▁( West ▁R iding ) ▁at ▁Hud ders field ▁in ▁ 1 9 6 1 . ▁ ▁Following ▁the ▁redu ctions ▁in ▁ 1 9 6 7 , ▁the ▁presence ▁at ▁the ▁St ▁Paul ' s ▁Street ▁dr ill ▁hall ▁was ▁re - est ab lished ▁by ▁C ▁( The ▁Duke ▁of ▁Well ington ' s ▁Regiment ) ▁Company , ▁ 3 rd ▁Battalion , ▁York shire ▁Vol unte ers ▁in ▁ 1 9 7 1 . ▁This ▁unit ▁evol ved ▁to ▁become ▁C ▁Company , ▁ 3 rd ▁Battalion , ▁The ▁Duke ▁of ▁Well ington ' s ▁Regiment ▁( West ▁R iding ) ▁( Y ork shire ▁Vol unte ers ) ▁in ▁