7000 personally executed over 28 consecutive nights, through a shot in the base of the skull while wearing a leather apron, gloves and hood, 300 a night for 10 hours each night, one every 3 minutes?
That's some character...
It takes a certain kind of monster to order the execution of 7000 officer prisoners of war. It takes another kind to carry it out personally with a collection of pistols brought in especially for the job.