Sector Four is shown under Confederate siege.
Sector Four designates a specific area located on the planet Coruscant. During the Battle of Coruscant which occurred during the Clone Wars, Captain Fordo and his team were tasked with the defense of the plaza from incoming droid fire, but were eventually overwhelmed by the enemy forces. Fordo then gave the order for the troopers to retreat from their position, but Master Yoda intervened and rescinded that order. Mace Windu was able to commandeer a captured droid starfighter and utilize it to provide much-needed support to the dwindling troops.