FFVII's SOLDIER. Mako infused humans are lalmost always stronger than a normal person anyways, so they already have an edge over any other potential enemy army in the world. But their real strength lies in the small elite group of 1st Classes. Sephiroth, Genesis, Angeal, Zack. Each an every one of them could compete with entire military forces, and most of the, at some point did. Sephiroth by himself took out ten thousand Wutai soldiers, and he was just one member of Shinra's army. Genesis singlehandedly rebelled against the Shinra army, and just kinda wrought havoc for several years even when faced with the army he once served. Even other enginerred supersoldiers were nothing to this guy. Zack's just a ****in beast. The dude kills a God, competes with Sephiroth, defeats both Genesis AND Angeal all by himself. It takes infinitely respawning Shinra infantry, a couple choppers spamming rockets, and a boring overly long 3 on 1 battle when Zack's already half dead to kill the guy, and even with all this, it took his death being written into the plot before the game ever began to pull it off. These four people alone could overwhelm pretty much any military organization throughout the series no problem.