As the former head of the Department of Magical Law Enforcement, Barty Crouch Sr. had needed to organize Ministry of Magic employees to resist Voldemort and the Death Eaters' attacks;
It had also been a long, arduous, and unforgettable time. It was during the struggle against Voldemort that he gradually came to understand what sort of person Voldemort was.
At least in Barty Crouch Sr.'s eyes, Voldemort during that period had been a mad dictator;
Whether they were wizards who opposed Voldemort or Death Eaters who followed him, most of what they felt toward Voldemort was, in truth, fear.
Wizards who encountered Voldemort while opposing him usually met only one end: being killed by Voldemort's Killing Curse;
Voldemort would also send Death Eaters to hunt them down at their homes, slaughtering their families as well before casting the Dark Mark as a warning.
That was why Voldemort had been so intimidating, even being called "You-Know-Who" and "He Who Must Not Be Named";
Gellert Grindelwald had once reasoned with people and appealed to their emotions, accepting as many as possible who recognized his ideals, but Voldemort at the time seemed to have no such concept;
As long as someone encountered Voldemort, he would generally leave no survivors. Harry Potter's family had faced the same situation, except Harry Potter survived and became The Boy Who Lived.
Even Death Eaters who failed to meet Voldemort's demands received no mercy from him, as he used the Cruciatus Curse to torture them;
According to Igor Karkaroff, even core Death Eaters such as Bellatrix Lestrange had been tortured by Voldemort with the Cruciatus Curse.
It was precisely for this reason that, once news spread that Voldemort had fallen, many Death Eaters immediately betrayed him;
These Death Eaters went to the Ministry of Magic to turn themselves