Complex sentence: Soon after this failure, the Germans decided to abandon the operation; the anti-communist group that Bessonov founded in the POW camp was disbanded, and he himself was transferred to the Sachsenhausen concentration camp.
Split into simpler sentences: Soon after this failure, the Germans decided to abandon the operation. The anti-communist group that Bessonov founded in the POW camp was disbanded, and he himself was transferred to the Sachsenhausen concentration camp.