The forces fought, and after a long, hard battle, the Republic. The ground battle was ultimately led by Count Dooku and Yoda.
There was a space battle, as well as a ground battle. It was also the first major battle of the Clone Wars. The Republic leaders were the Jedi Order, higher-ranking clone troopers, Lok Revenants, and Mere Resistance (Lok Revenants and Mere Resistance are pirate groups). The commanders of the Separatists were Count Dooku, Nute Gunray, Passel Argente, Wat Tambor, Shu Mai, San Hill, and Poggle the Lesser. The first battle in the Clone Wars was the Battle of Geonosis. The battle was then moved outside to the Geonosian plains and the Battle of Geonosis was started, as was the Clone Wars. Suddenly, after the denial of surrender by the Jedi, Grandmaster Yoda brought clone troopers to the Geonosian Arena.
Many Jedi died during the skirmish, and was next major death of Jedi next to the Battle of Ruusan, thousands of years ago. Dooku, Poggle the Lesser, and many other Separatist leader led their forces into battle against the Jedi. They managed to escape capture from three deadly animals (Reek, Nexu, and an Acklay), and two-thousand Jedi came to rescue them. The Clone Wars began when Count Dooku captured Anakin Skywalker, Padme Amidala, and Obi-Wan Kenobi and sent them to Geonosis.
