1 7 4 th ▁( 2 / 2 nd ▁London ) ▁and ▁ 1 7 5 th ▁( 2 / 3 rd ▁London ) ▁Brig ades . ▁ ▁Although ▁the ▁role ▁of ▁draft - find ing ▁for ▁the ▁batt al ions ▁over se as ▁was ▁now ▁taken ▁over ▁by ▁the ▁brig ade ' s ▁ 4 th ▁Line ▁batt al ions , ▁training ▁was ▁dis rupted ▁by ▁these ▁frequent ▁moves ▁and ▁by ▁the ▁men ▁being ▁in ▁b illet s ▁until ▁June ▁ 1 9 1 6 ▁when ▁they ▁moved ▁into ▁Black rock ▁Camp ▁outside ▁I ps wich . ▁The ▁only ▁weapons ▁available ▁for ▁training ▁were ▁. 2 5 6 - in ▁Japanese ▁Ar iska ▁rif les . ▁The ▁batt al ions ▁absor bed ▁large ▁draft s ▁of ▁rec ruits ▁under ▁the ▁Derby ▁scheme ▁in ▁February ▁ 1 9 1 6 . ▁ ▁In ▁June ▁ 1 9 1 6 , ▁the ▁ 2 / 1 st ▁Brigade , ▁having ▁seen ▁active ▁service ▁at ▁Gal lip oli ▁and ▁against ▁the ▁Sen us si ▁reb els , ▁was ▁sent ▁to ▁France ▁where ▁it ▁was ▁broken ▁up ▁and ▁the ▁men ▁draft ed ▁to ▁the ▁ 1 st ▁Line ▁batt al ions ▁serving ▁on ▁the ▁Western ▁Front ▁with ▁the ▁ 5 6 th ▁( 1 / 1 st ▁London ) ▁Division . ▁As ▁a ▁result , ▁the ▁ 3 rd ▁Line ▁batt al ions ▁of ▁the ▁ 1 7 3 rd ▁B de ▁were ▁ren umber ed ▁as ▁ 2 nd ▁Line ▁units . ▁ ▁At ▁the