Many clone troopers, Many AT-RT's, at least 1 gunship, Pong Krell, Many AT-RT's
Many Umbarans, 1 supply ship, Separatist space blockade, many battle droids
The Battle of Umbara was a major battle that took place during the second year of the clone wars, on the planet Umbara. The Umbarans had withdrew from the Republic and aligned themselves with the Separatists. The Republic retaliated by sending an army to retake the planet.