▁Hospital ▁is ▁one ▁of ▁the ▁oldest ▁medical ▁units ▁of ▁the ▁British ▁Army ' s ▁Royal ▁Army ▁Medical ▁Corps , ▁trac ing ▁their ▁history ▁back ▁to ▁the ▁ 4 th ▁London ▁Field ▁Am bul ance ▁formed ▁in ▁ 1 9 0 8 . ▁After ▁seeing ▁service ▁in ▁both ▁World ▁War ▁I ▁and ▁World ▁War ▁II , ▁the ▁regiment ▁continues ▁to ▁serve ▁within ▁the ▁City ▁of ▁London . ▁ ▁History ▁In ▁ 1 9 0 7 , ▁Secretary ▁of ▁State ▁for ▁War ▁Richard ▁H ald ane ▁announced ▁a ▁series ▁of ▁re forms , ▁which ▁would ▁affect ▁mostly ▁the ▁Vol unte ers ▁and ▁Ye oman ry . ▁These ▁two ▁groups ▁were ▁merged ▁to ▁form ▁the ▁" T er rit orial ▁Force ". ▁On ▁ 1 ▁April ▁ 1 9 0 8 , ▁the ▁force ▁was ▁born . ▁These ▁re forms ▁created ▁four teen ▁divisions , ▁four teen ▁mounted ▁brig ades , ▁and ▁coast al ▁defence ▁groups . ▁As ▁part ▁of ▁these ▁re forms , ▁all ▁of ▁the ▁volunte er ▁batt al ions ▁were ▁renamed ▁to ▁lose ▁their ▁" vol unte er " ▁title ▁and ▁gain ▁regional ▁or ▁regular ▁titles . ▁ ▁Following ▁these ▁sets ▁of ▁re forms , ▁the ▁ 4 th ▁London ▁Field ▁Am bul ance ▁was ▁formed ▁from ▁the ▁W ool wich ▁Comp an ies , ▁Vol unte er ▁Medical ▁Staff ▁Corps . ▁Following ▁the ▁formation ▁of ▁the ▁Territ orial ▁Force , ▁the ▁ 4 7 th ▁( 2 nd ▁London ) ▁Division ▁was ▁formed , ▁and ▁the ▁regiment ▁assigned ▁to ▁the ▁Royal ▁Army