A latter update nerfed it’s military capacity and hence much of it is dependent upon research. When Supreme commander 2 was first released, the ACU was a formidable fighter in it’s own right.
Is it possible to rush Supreme Commander 2? You can buy Supreme Commander: Forged Alliance for a reasonable amount on Steam here: How to Play Supreme Commander: Forged Alliance Online With FA Forever (Windows Only) How do you play Supreme Commander Forged Alliance forever?