Complex sentence: In spite of accusations to have influenced dates of executions for scientific reasons, after WWII the Russian Military and KGB found him not guilty on any account and thus urged Stieve to stay with the Anatomic Institute of the Chariteé to represent research and teaching.
Split into simpler sentences: In spite of accusations to have influenced dates of executions for scientific reasons, after WWII the Russian Military and KGB found him not guilty on any account. Stieve stayed with the Anatomic Institute of the Chariteé to represent research and teaching.