▁Battalion ▁quickly ▁gained ▁control ▁of ▁Dr var . ▁▁ ▁Group ▁supported ▁by ▁Red ▁Group ▁over c ame ▁minimal ▁resistance ▁at ▁the ▁c emetery ▁and ▁Ry b ka ▁established ▁his ▁headquarters ▁behind ▁the ▁c emetery ▁walls . ▁However , ▁there ▁was ▁no ▁sign ▁of ▁T ito ▁or ▁his ▁headquarters . ▁ ▁Group ▁and ▁ ▁Group ▁were ▁also ▁un success ful ▁as ▁the ▁British ▁and ▁American ▁groups ▁had ▁moved ▁following ▁the ▁aer ial ▁reconna issance ▁on ▁ 2 3 ▁May . ▁Part s ▁of ▁ ▁Group ▁land ed ▁their ▁gl iders ▁in ▁a ▁field ▁immediately ▁south ▁of ▁the ▁Dr var ▁cave ▁and ▁came ▁under ▁fire ▁from ▁members ▁of ▁the ▁T ito ▁Esc ort ▁Battalion ▁on ▁the ▁high ▁ground ▁in ▁the ▁area ▁of ▁the ▁cave . ▁The ▁ ▁Group ▁land ed ▁their ▁gl iders ▁at ▁the ▁" West ern ▁Cross ", ▁then ▁assault ed ▁a ▁building ▁they ▁believed ▁was ▁the ▁Part isan ▁communic ations ▁centre . ▁However , ▁the ▁building ▁was ▁actually ▁the ▁office ▁of ▁the ▁Commun ist ▁Party ▁of ▁Y ug oslav ia ▁Central ▁Committee , ▁who ▁resist ed ▁fan atically ▁until ▁the ▁building ▁was ▁level led ▁using ▁s atch el ▁charges . ▁Both ▁Blue ▁Group ▁and ▁Green ▁Group , ▁consisting ▁of ▁par ach ute ▁troops ▁that ▁land ed ▁in ▁the ▁eastern ▁part ▁of ▁Dr var ▁where ▁most ▁of ▁the ▁population ▁lived , ▁were ▁also ▁engaged ▁in ▁heavy ▁fighting . ▁The ▁Young ▁Commun ist ▁League ▁of ▁Y ug oslav ia ▁had ▁just ▁finished ▁a ▁conference ▁in ▁Dr var , ▁and ▁many ▁of ▁the ▁deleg ates