Battle of Königsberg
In four days of urban warfare , Soviet forces of the 1st Baltic Front and the 3rd Belorussian Front captured the city of Königsberg , present day Kaliningrad , Russia . 
<triplet> 1st Baltic Front <subj> Soviet <obj> country <triplet> Königsberg <subj> Soviet <obj> country <subj> Kaliningrad <obj> replaced by <triplet> Kaliningrad <subj> Königsberg <obj> replaces