During the rise of the Empire, the Emperor's home planet of Naboo rapidly established itself as a major irritant. After a number of Naboo's ambassadors were sent home in various states of dismemberment, her newly-elected queen broke off diplomatic ties and began exploring military options. Clearly, it was time for a regime change; a change that would be effected by the 501st, now under the direct command of Darth Vader. Our orders were simple: to infiltrate the city and take out their leader- sending a clear signal to other potential troublemakers in the Empire.

With the Queen eliminated, Naboo quickly fell in line. It was the first time the 501st was called upon to "adjust" a planet's government, but it wouldn't be the last. Within months, the 501st gained a well-deserved reputation as "Vader's Fist".
-Excerpts from the 501st Journal Battlefront II (Pandemic Games)

My illustration for the first Imperial level in the campaign, as approved by  MarcusStarkiller. As Emperor Palpatine (the in-game 'hero' for the Empire on Naboo in Conquest) was not present in person, I elected to show our narrator against the enemies he'd have faced (minus the Padawans- don't worry, you'll get to see one later).

Lieutenant CT-31-4159 based on: http://starwars.wikia.com/wiki/Reti....._Clone_Trooper
Naboo Guard: http://starwars.wikia.com/wiki/Roya.....Forces/Legends
Jedi Knight (blue single blade) based on: http://battlefront.wikia.com/wiki/J.....#Jedi%20Knight
Jedi Knight (green dual-blade) based on: http://battlefront.wikia.com/wiki/J.....#Jedi%20Knight
Jedi Knight (green single blade) based on: http://battlefront.wikia.com/wiki/J.....di%20Protector
Queen Apailana: http://starwars.wikia.com/wiki/Apailana/Legends

Hope no one minds me taking liberties with the in-game models.

Star Wars © LucasFilm