▁B t ys ▁▁ 4 1 9 ▁H AA ▁B ty ▁joined ▁July ▁ 1 9 4 1 ▁ 5 9 th ▁( Es sex ▁Regiment ) ▁H AA ▁R gt ▁from ▁ 3 7 ▁AA ▁B de ▁in ▁ 6 ▁AA ▁Division ▁Aut umn ▁ 1 9 4 1 , ▁to ▁ 8 ▁AA ▁Division ▁December ▁ 1 9 4 1 ▁▁ 1 6 4 , ▁ 1 6 7 , ▁ 2 6 5 , ▁ 4 1 8 ▁H AA ▁B t ys ▁ 6 0 th ▁( City ▁of ▁London ) ▁H AA ▁R gt ▁joined ▁by ▁October , ▁left ▁to ▁become ▁un br ig aded ▁mobile ▁unit ▁by ▁November ▁ 1 9 4 2 ▁▁ 1 6 8 , ▁ 1 6 9 , ▁ 2 0 6 ▁H AA ▁B t ys ▁ 7 2 nd ▁( H amps hire ) ▁H AA ▁R gt ▁joined ▁January ▁ 1 9 4 2 ; ▁to ▁W O ▁control ▁by ▁May ▁ 1 9 4 2 , ▁returned ▁by ▁October , ▁then ▁to ▁Operation ▁Tor ch ▁December ▁ 1 9 4 2 ▁▁ 2 1 7 , ▁ 2 1 8 , ▁ 3 9 3 ▁H AA ▁B t ys ▁ 7 6 th ▁( G lou c esters hire ) ▁H AA ▁R gt ▁joined ▁June , ▁left ▁July ▁ 1 9 4 2 , ▁later ▁in ▁Operation ▁Tor ch ▁▁ 2 3 6 , ▁ 2 3 7 , ▁ 3 4 9 ▁H AA ▁B