Galactic expansion and domination is the order of the day. Various strategic and tactical challenges. Take up the banner of the Empire or the Rebellion. As the Empire, you must capture Luke Skywalker, Mon Mothma or destroy Rebel headquarters. While on the side of the Rebel Alliance, you must capture Darth Vader, The Emperor, or destroy the Imperial Seat at Coruscant.
Different sides have different advantages and disadvantages.
Only those who use their troops in the proper way maximizing their advantages and minimizing their disadvantages will reign triumphant over the legions of their enemies.