▁was ▁released . ▁T anks ▁began ▁rolling ▁off ▁the ▁production ▁line ▁a ▁year ▁later . ▁The ▁r ushed ▁design ▁left ▁a ▁number ▁of ▁fault s , ▁and ▁the ▁vehicle ▁was ▁expected ▁to ▁be ▁replaced ▁with ▁the ▁T 1 4 ▁heavy ▁tank ▁ordered ▁from ▁( and ▁designed ▁in ▁collaboration ▁with ) ▁the ▁USA ▁in ▁ 1 9 4 2 . ▁Par allel ▁development ▁of ▁the ▁A 3 3 ▁Excel si or ▁was ▁proposed ▁following ▁the ▁Die ppe ▁ra id . ▁Both ▁were ▁cancel led ▁when ▁fault s ▁with ▁the ▁Church ill ▁were ▁rect ified , ▁and ▁the ▁vehicle ▁proved ▁capable ▁of ▁meeting ▁battle field ▁requirements . ▁ ▁A 4 3 ▁Black ▁Prince ▁was ▁later ▁developed ▁from ▁the ▁Church ill , ▁design ▁comm encing ▁in ▁ 1 9 4 3 , ▁to ▁be ▁armed ▁with ▁the ▁ 1 7 ▁p ound er . ▁ ▁By ▁the ▁time ▁it ▁was ▁ready ▁for ▁production ▁( ear ly ▁ 1 9 4 5 ) ▁the ▁Sh erman ▁Fire fly ▁and ▁Com et ▁had ▁overcome ▁the ▁immediate ▁need ▁for ▁ 1 7 ▁p ound er ▁armed ▁t anks , ▁while ▁the ▁new ▁Cent ur ion ▁offered ▁similar ▁protection ▁in ▁a ▁more ▁ag ile ▁cru iser ▁tank ▁configuration . ▁ ▁Production ▁was ▁cancel led , ▁and ▁with ▁Cent ur ion ▁( and ▁the ▁Universal ▁tank ▁concept ) ▁now ▁replacing ▁the ▁need ▁for ▁separate ▁Cru iser ▁and ▁Infantry ▁t anks , ▁this ▁marked ▁the ▁end ▁of ▁the ▁Infantry ▁tank ▁line . ▁ ▁T ank ▁nom en cl ature ▁ ▁British ▁tank