Russian military deception
Deception contributed to major Soviet victories including the Battle of Stalingrad , the Battle of Kursk , and Operation Bagration ( in Belarus ) : in these cases , surprise was achieved despite very large concentrations of force , both in attack and in defence . 
<triplet> Battle of Stalingrad <subj> Soviet <obj> participant <triplet> Battle of Kursk <subj> Soviet <obj> country