The Nazis captured 5.75 million Soviet prisoners of war, more than they took from all the other Allied powers combined. Of these, they killed an estimated 3.3 million,[339] with 2.8 million of them being killed between June 1941 and January 1942.[340] Many POWs starved to death or resorted to cannibalism while being held in open-air pens at Auschwitz and elsewhere.[341]