ank ▁Board ▁was ▁re organ ised ▁to ▁provide ▁equal ▁representation ▁from ▁Ministry ▁of ▁Supp ly ▁and ▁the ▁War ▁Office , ▁consisting ▁of : ▁War ▁Office ▁Deput y ▁Chief ▁of ▁the ▁Imperial ▁General ▁Staff ▁( L t . ▁Gen . ▁Ron ald ▁We eks ) ▁Ass istant ▁Chief ▁of ▁the ▁Imperial ▁General ▁Staff ▁( M aj or ▁General ▁Dar il ▁Watson ) ▁Director ▁of ▁Arm oured ▁Fight ing ▁Ve h icles ▁( M aj or ▁General ▁A . ▁W . ▁C . ▁Richard son ) ▁Director ▁of ▁Mechan ical ▁Engineering ▁( M aj . ▁Gen . ▁Eric ▁Row cro ft ) ▁Ministry ▁of ▁Supp ly ▁Chief ▁Executive ▁for ▁T ank ▁Design , ▁( and ▁chairman ) ▁( Vis count ▁We ir ) ▁Chair man ▁of ▁the ▁Supp ly ▁Council ▁( S ir ▁William ▁Ro otes ) ▁Controller ▁General ▁of ▁Research ▁and ▁Development ▁( Mr . ▁Oliver ▁Lucas ), ▁later ▁as ▁" Direct or - General ▁of ▁Fight ing ▁Ve h icles ▁( Res earch ▁and ▁Development )" ▁Chief ▁Engine er ▁of ▁T ank ▁Design ▁( Mr . ▁W ▁A ▁Rob oth am ) ▁O thers ▁USA ▁L ia ison ▁Colonel ▁G . ▁A . ▁Green , ▁( of ▁W . ▁A ver ell ▁Harr iman ' s ▁staff ). ▁Following ▁the ▁fall ▁of ▁France , ▁US ▁contribution ▁to ▁the ▁war ▁effort ▁became ▁cru cial . ▁In ▁early ▁ 1 9 4 2 ▁a ▁T ank ▁Mission ▁was ▁established ▁and ▁sent ▁to ▁the ▁USA ▁to ▁exchange ▁information ▁on ▁AF V ▁design , ▁compr ising ▁Lucas