Captain Rex's Final Battle With The New Droid Army!

Rico is on his ship with his fleet above Geonosis when they fall under attack from old Sepparatist ships. Rico's fleet counter attacks while calling down to Rex on the planet below. Rex reports that the droid army appears to be evactuating the planet. Rex says his troops are in position to intercept, but are outnumbered, and asks Rico for orders. Rico orders him to do whatever it takes to stop them from fleeing the planet.

Battlefield

 * Geonosis
 * Mechanical Graveyard

Combatants

 * Rico's Brigade
 * 501st Legion
 * Captain Rex
 * Jayden Dooku's Droid Army
 * Jayden Dooku
 * B1 Battle Droids
 * Magna Guards
 * Spider Droids
 * Tactical Droids

Battle Results
Jayden Dooku and his sizeable force moves towards gunships they plan to use to evacuate the planet, supported by a few tanks. However, Captain Rex and the 501st is between their enemy and their gunships with a force about half the size.

The droids move forward, but Rex has his men take up defensive positions int he graveyard of old artillery and on an overlooking ridge. The two forces engage Both sides struggle for a time to gain an advantage, with the 501st prioritizing enemy armor while taking heavy losses. 501st rocket troopers manage to take out most of the enemy armor that tries to break their lines.

Jayden Dooku eventually orders a retreat, and returns with reinforcements after Rex has fortified his position, setting up a defensive line in front of the gunships. The droids have only infantry now. The two sides engage at a long range where the clones have the advantage with their cover and sniper rifles, but the droids continue forward as a unified force.

Jayden Dooku himself charges forward, but gets taken down. The clones eventually stop the droid's advance and dwindle their numbers. The firing stops briefly, then the few remaining droids make a last assault, but are easily wiped out.