General Grievous, the Supreme Commander of the Droid Army, had an obsessive hatred of the Jedi Order due to the Jedi and Republic's one-sided role in ending a war that resulted in the genocide of Grievous' people when he was a warlord. He exploited the Jedi's compassion for the victims of the war to further his own agenda, and actively sought to recruit those with a deep hatred of the Jedi Order to join his cause. Grievous also led a massive attack on the Jedi on Hypori, which resulted in the obliteration of an entire Republic task force. The anti-Jedi sentiment was widespread within Grievous' army and was shared by other non-Force sensitives, such as Pre Vizsla and Sergeant Kreel, who were capable of wielding a lightsaber and dueling a Jedi. His rivalry with Mace Windu was particularly strong, as Mace hated Grievous for killing Jedi, while Grievous hated Mace for being a Jedi.