ly . ▁ ▁As ▁works ▁within ▁the ▁Ministry ▁of ▁Supp ly ▁scale d ▁up , ▁a ▁new ▁Director ▁General ▁of ▁T anks ▁and ▁Transport , ▁Peter ▁Ben nett , ▁took ▁on ▁the ▁cap ability ▁of ▁design ▁leadership , ▁and ▁in ▁ 1 9 4 0 ▁added ▁a ▁Controller ▁of ▁Mechan isation ▁( M aj or - General ▁A . E . ▁David son ) ▁to ▁super v ise ▁the ▁Mechan isation ▁Board , ▁working ▁as ▁before . ▁ ▁In ▁May ▁ 1 9 4 0 ▁the ▁War ▁Cab inet ▁had ▁been ▁established , ▁and ▁formed ▁the ▁T ank ▁Board ▁to ▁investigate ▁and ▁resolve ▁tank ▁design ▁and ▁production ▁problems . ▁ ▁The ▁Director ▁General ▁of ▁T anks ▁and ▁Transport ▁was ▁replaced ▁( now ▁Geoff rey ▁Bur ton ) ▁and ▁now ▁led ▁a ▁Director ▁of ▁Arm oured ▁Fight ing ▁Ve h icles ▁( re present ing ▁the ▁War ▁Office ), ▁and ▁separate ▁Director ▁of ▁Design ▁( A . A . M . ▁Durant ) ▁and ▁Director ▁of ▁Production . ▁ ▁Under ▁Durant ' s ▁new ▁Director ate ▁of ▁T ank ▁Design ▁a ▁new ▁Department ▁of ▁T ank ▁Design ▁( DT D ) ▁was ▁formed ▁to ▁design ▁the ▁t anks . ▁ ▁The ▁D TD ▁was ▁formed ▁rapidly ▁from ▁available ▁techn icians , ▁in ▁many ▁cases ▁lack ing ▁experience ▁and ▁lack ing ▁in ▁production ▁facilities , ▁while ▁a ▁large ▁number ▁of ▁projects ▁based ▁on ▁General ▁Staff ▁requirements ▁were ▁under way . ▁As ▁such , ▁tank ▁design ▁was ▁increasing ly ▁reli ant ▁on ▁industry ▁experience ▁and ▁capabilities