ub an . ▁ ▁The ▁proposal ▁to ▁build ▁a ▁full ▁fort ▁was ▁de emed ▁by ▁the ▁government ▁in ▁France ▁to ▁be ▁too ▁cost ly , ▁despite ▁both ▁the ▁importance ▁and ▁vulner ability ▁of ▁Quebec ▁City . ▁After ▁the ▁fall ▁of ▁Louis bourg ▁in ▁ 1 7 4 5 , ▁considerable ▁work ▁on ▁the ▁batt lement s ▁took ▁place ▁under ▁the ▁direction ▁of ▁military ▁engineer ▁G asp ard - Jose ph ▁Ch aus seg ros ▁de ▁Lé ry . ▁ ▁British - rule ▁The ▁first ▁British ▁Lieutenant ▁Governor ▁of ▁Quebec , ▁General ▁James ▁Murray , ▁saw ▁the ▁weak ness ▁of ▁Quebec ▁City ' s ▁def ences ▁( inde ed , ▁Murray ' s ▁post ▁existed ▁precisely ▁because ▁the ▁British ▁had ▁conquer ed ▁Quebec ▁City ▁four ▁years ▁before ▁Murray ' s ▁appointment ▁as ▁governor ▁in ▁ 1 7 6 3 ). ▁He ▁ur ged ▁the ▁construction ▁of ▁a ▁cit adel , ▁but ▁the ▁imperial ▁government ▁at ▁West min ster , ▁like ▁the ▁French ▁before , ▁de emed ▁a ▁large ▁fort ▁to ▁be ▁of ▁little ▁value ; ▁a ▁smaller , ▁wooden ▁cit adel ▁was ▁built . ▁▁ ▁During ▁the ▁American ▁Revolution ary ▁War , ▁after ▁se izing ▁Montreal ▁in ▁the ▁aut umn ▁of ▁ 1 7 7 5 , ▁American ▁reb els , ▁led ▁by ▁General ▁Richard ▁Mont gom ery ▁and ▁Bened ict ▁Arnold , ▁attempted ▁to ▁take ▁Quebec ▁on ▁ 3 1 ▁December . ▁There , ▁Mont gom ery ▁was ▁killed ▁and ▁Arnold ▁wounded ▁and ▁forced ▁to ▁retre at . ▁The ▁Americans ▁attempted ▁to ▁keep