let me get this straight.
Cid was the Fuhrer of the Militase Empire. He finds out that the crystals of Orient control each of their respective empire's development throughout history and when the time comes they get wiped out as per the will of the gods. Kinda like Mass Effect Relays and Reapers. So he wages a grand war so the cycle can be broken - but the gods empower class-0 so they can protect the crystals. He fails, cycle repeats....