- on - Se a ▁and ▁later ▁at ▁St ▁Os yth ▁for ▁the ▁rest ▁of ▁the ▁war . ▁It ▁was ▁dis band ed ▁on ▁ 6 ▁May ▁ 1 9 1 9 . ▁ ▁Inter war ▁ ▁The ▁ 4 th ▁Gl ouc esters ▁reform ed ▁on ▁ 7 ▁February ▁ 1 9 2 0 ▁in ▁the ▁T F ▁( T er rit orial ▁Army ▁( TA ) ▁from ▁ 1 9 2 1 ). ▁The ▁batt alion ' s ▁dr ill ▁hall ▁had ▁been ▁bought ▁by ▁Br istol ▁Museum ▁and ▁Br istol ▁University ▁just ▁before ▁the ▁war , ▁and ▁a ▁new ▁dr ill ▁hall ▁was ▁built ▁in ▁Old ▁Market ▁Street . ▁During ▁the ▁ 1 9 2 0 s ▁the ▁cad et ▁corps ▁of ▁Col ston ' s ▁School ▁and ▁Kings wood ▁Training ▁School ▁were ▁affili ated ▁to ▁the ▁batt alion . ▁▁ 6 6 th ▁Search light ▁Regiment ▁In ▁the ▁ 1 9 3 0 s ▁the ▁increasing ▁need ▁for ▁anti - air craft ▁( AA ) ▁defence ▁for ▁Britain ' s ▁cities ▁was ▁addressed ▁by ▁converting ▁a ▁number ▁of ▁T A ▁inf antry ▁batt al ions ▁into ▁search light ▁( S / L ) ▁units . ▁The ▁ 4 th ▁Gl ouc esters ▁was ▁one ▁unit ▁selected ▁for ▁this ▁role , ▁becoming ▁ 4 th ▁( City ▁of ▁Br istol ) ▁Battalion , ▁Gl ouc esters hire ▁Regiment ▁( 6 6 th ▁Search light ▁Regiment ) ▁on ▁ 1 ▁November ▁ 1 9 3 8 , ▁with ▁H Q ,