Complex sentence: Rauter also instigated a system of retaliation for assaults on Nazi officials and their Dutch collaborators: one killed Nazi equalled ten Dutch victims, one killed Dutch collaborator equalled three Dutch victims.
Split into simpler sentences: Rauter also instigated a system of retaliation for assaults on Nazi officials and their Dutch collaborators. One killed Nazi equalled 10 Dutch victims, one killed Dutch collaborator equalled 3 Dutch victims.