Board Thread:Speculation House/@comment-97.88.22.3-20160301003945/@comment-24757748-20160305042813

It's possible that he's the wizard's grandson or otherwise descended from him, hence the story being around since he was a boy. Or not. He very well may have been lying since Pyrrha hadn't agreed to anything at that point.

Plus, there wasn't really any opportunity to tell her otherwise after she agreed to the Aura transfer. "Pyrrha, get into the chamber!" "Okay!" "Get ready!" "Okay!" "By the way, I'm the wizard who made the Maidens in the first place!" "... Wha-" *gets zapped with Glowey Soul Shit

Him being a general in the Great War makes some sense, although it doesn't explain why he looks like he's in his thirties-forties. Remember, Jaune says that his great-great-grandfather used Crocea Mors in the War, which would make Ozpin at least a century old. This rules out Ironwood serving him at that time (Unless he's also immortal, which I doubt).

Of course, it's possible for both of these theories to be true. After all, the War was a worldwide conflict, so even an immortal wizard would have to choose a side.