Early Imperial campaigns

Following the establishment of the Galactic Empire and the execution of the Great Jedi Purge, the new Emperor Palpatine ordered a massive crackdown on rebellious elements seeking to destroy the Empire. Darth Vader and the 501st Legion were instrumental in this campaign.

Siege of Naboo
The first planet to be attacked was the Emperor's home planet, Naboo. It's queen, Apailana, was said to be harboring fugitive Jedi.

It's capital city, Theed, was placed under siege by the 501st. It was well defended, up until the point where the Imperial troopers destroyed an auto-turret grid console and began attacking Apailana herself. Her Jedi bodyguards were killed by IFT-T tanks and she herself was sniped down.

Battle of Mustafar
The next planet to oppose the Empire was Mustafar, now home to the Geonosian called Gizor Delso. He had reactivated the Droid Army seen in the Clone Wars, and was preparing to use it when Darth Vader attacked the planet. The lead Star Destroyer survived several boarding raids by Delso's orbital defences while launching TIE Fighters to destroy enemy fighters and disable the droid flagships shields, destroying the droid blockade.

In the ground battle, Imperial stormtroopers took an orbital strike beacon to the droid factories central antenna. After killing Delso, the factory was destroyed.

Destruction of Kamino
The last battle in this campaign was a siege of the cloning facilities on the planet Kamino, bred to take arms against the Empire. Boba Fett was hired to lead the 501st onto the planet. After blowing open the doors and securing the central platform, clone life support pods were destroyed and the Kaminoans evacuated in LAAT gunships. These were destroyed by Imperial Shock Troopers.

Approximately 10 years after the Battle of Kamino, the Galactic Civil War began.