▁Den ise , ▁now ▁ 1 9 ▁years ▁old , ▁was ▁encourag ed ▁to ▁become ▁a ▁full - f led ged ▁member ▁of ▁the ▁French ▁Res istance ▁by ▁joining ▁one ▁of ▁its ▁cells ▁in ▁Lyon . ▁A do pt ing ▁her ▁old ▁sc out ing ▁nick name , ▁she ▁entered ▁the ▁under ground ▁movement ▁as ▁" M i ark a ", ▁received ▁training , ▁and ▁then ▁began ▁c land est in ely ▁transport ing ▁resistance ▁messages ▁by ▁b icy cle . ▁After ▁seven ▁months ▁of ▁this ▁work , ▁she ▁was ▁ur ged ▁to ▁leave ▁Lyon ▁for ▁safety ▁reasons . ▁ ▁Test ifying ▁in ▁ 1 9 4 6 ▁about ▁her ▁war - time ▁experiences , ▁she ▁noted ▁that ▁her ▁departure ▁had ▁been ▁prompt ed ▁by ▁a ▁wave ▁of ▁arr ests ▁of ▁United ▁Res istance ▁Mov ement ▁members . ▁In ▁an ▁attempt ▁to ▁mask ▁her ▁appearance ▁to ▁facil itate ▁her ▁escape , ▁she ▁ex changed ▁co ats ▁with ▁one ▁of ▁her ▁com r ades , ▁but ▁preserved ▁her ▁sense ▁of ▁self ▁by ▁ref using ▁to ▁cut ▁off ▁her ▁bl onde ▁bra ids .</ blockquote > ▁ ▁Ar riv ing ▁in ▁Nice ▁on ▁March ▁ 1 8 ▁in ▁time ▁for ▁birth day ▁celebr ations ▁for ▁her ▁older ▁sister , ▁she ▁enjoyed ▁only ▁the ▁brief est ▁of ▁reun ions ▁with ▁her ▁family ▁before ▁returning ▁to ▁Lyon . ▁Ten ▁days ▁later , ▁her ▁parents , ▁brother ▁and ▁two ▁sister s ▁were ▁arrested ▁in ▁Nice ▁as ▁part ▁of ▁a ▁round up ▁of ▁Jewish ▁residents , ▁and ▁sent ▁to