Mine was during the campaign. The Fleet sent to capture Mon Calamari attacked Correllia. In Orbit I had 3 Assault Frigates, 3 Nebulon - B's, 1 Correllian Corvette, and a level Three Station. The Imperial Fleet had a Pop Cap of 50, and included around 10 ISD's.
By the end of the battle, I had only 1 Assault Frigate, and several squadrons of bombers. The entire Imperial Fleet was destroyed.