▁Division ▁by ▁the ▁ 3 / 1 st ▁London ▁Brigade . ▁Un us ually , ▁therefore , ▁the ▁event ual ▁reserve ▁units ▁of ▁the ▁first ▁four ▁batt al ions ▁of ▁the ▁London ▁Regiment ▁were ▁number ed ▁as ▁the ▁ 4 th ▁Line . ▁ ▁Initial ▁Order ▁of ▁Battle ▁The ▁ 3 / 1 st ▁London ▁Brigade ▁came ▁into ▁existence ▁at ▁T ad worth ▁in ▁Sur rey ▁in ▁April ▁ 1 9 1 5 ▁and ▁its ▁first ▁commander , ▁Colonel ▁H . ▁Ch ol mon de ley , ▁C B , ▁( Lond on ▁R if le ▁Brigade ) ▁was ▁appointed ▁on ▁ 1 0 ▁May . ▁Ch ol mon de ley ▁had ▁commanded ▁the ▁Mount ed ▁Infantry ▁of ▁the ▁City ▁Imperial ▁Vol unte ers ▁during ▁the ▁Second ▁Bo er ▁War , ▁had ▁commanded ▁a ▁Pr ison er ▁of ▁war ▁camp ▁at ▁Lanc aster , ▁Lanc ash ire ▁after ▁the ▁out break ▁of ▁war ▁in ▁ 1 9 1 4 , ▁and ▁had ▁just ▁raised ▁the ▁ 3 / 5 th ▁B n ▁London ▁Regiment ▁( Lond on ▁R if le ▁Brigade ). ▁The ▁ 3 / 1 st ▁London ▁B de ' s ▁component ▁batt al ions ▁had ▁already ▁been ▁raised : ▁▁ 3 / 1 st ▁( City ▁of ▁London ) ▁Battalion , ▁London ▁Regiment ▁( Ro yal ▁F us ili ers ) ▁– ▁January ▁ 1 9 1 5 ▁▁ 3 / 2 nd ▁( City ▁of ▁London ) ▁Battalion , ▁London ▁Regiment ▁( Ro yal ▁F us ili ers )