During the Clone Wars, fighting between the Republic and the Separatists continued. Jedi were sent to help the clone armies overcome their enemies. The droid armies fought to hold more planets in its grip. For three years the fighting took place across the Galaxy. The Separatists gained several new allies during the Clone Wars. After the death of Jango Fett on Geonosis, a new bounty hunter named Durge took his place. Count Dooku found a woman named Asajj Ventress who was powerful in the Force. Asajj Ventress proved to be a powerful commander in the Separatist army. A new leader of the Separatists rose at this time. General Grievous was half droid and half alien. He was trained in lightsaber combat by Count Dooku and became feared by Jedi throughout the Galaxy. One of the final and most daring attacks on the Republic came when General Grievous led a large fleet of starships to Coruscant to capture Supreme Chancellor Palpatine.