▁March ▁ 1 9 1 8 ) ▁▁ 1 6 4 th ▁T rench ▁Mort ar ▁B atter y ▁( formed ▁March ▁ 1 9 1 6 ) ▁ ▁Inter war ▁years ▁Both ▁the ▁brig ade ▁and ▁division ▁were ▁dis band ed ▁after ▁the ▁war ▁in ▁ 1 9 1 9 ▁but ▁later ▁reform ed ▁in ▁ 1 9 2 0 ▁in ▁the ▁Territ orial ▁Army ▁as ▁the ▁ 1 6 4 th ▁( N orth ▁Lanc ash ire ) ▁Infantry ▁Brigade ▁and ▁continued ▁to ▁serve ▁with ▁the ▁ 5 5 th ▁Division . ▁The ▁brig ade ▁was ▁reconst it uted ▁with ▁the ▁same ▁four ▁batt al ions ▁as ▁it ▁had ▁before ▁the ▁First ▁World ▁War . ▁ ▁However , ▁in ▁the ▁late ▁ 1 9 3 0 s ▁the ▁brig ade ▁saw ▁all ▁of ▁its ▁batt al ions ▁posted ▁away ▁or ▁converted ▁to ▁other ▁roles : ▁in ▁ 1 9 3 8 ▁the ▁ 4 th ▁Battalion , ▁King ' s ▁O wn ▁Royal ▁Regiment ▁( L anc aster ) ▁was ▁transferred ▁to ▁the ▁Royal ▁Art illery ▁and ▁converted ▁into ▁the ▁ 5 6 th ▁( K ing ' s ▁O wn ) ▁Anti - T ank ▁Regiment , ▁Royal ▁Art illery , ▁the ▁ 5 th ▁Battalion , ▁King ' s ▁O wn ▁was ▁transferred ▁to ▁the ▁ 1 2 6 th ▁( E ast ▁Lanc ash ire ) ▁Infantry ▁Brigade , ▁ 5 5 th ▁( West ▁Lanc ash ire ) ▁Infantry ▁Division . ▁They ▁were ▁both ▁replaced ▁in ▁the