He's actually terrible in direct combat, but he's a fantastic at tactics. That was part of the reason why the upper command had no idea what to do with him. So, yes, he'd die horribly against even an average combatant. His actual brilliance (beyond the suicidal tendencies) gets shown in this bit with how they are co-opting the ram tactic.It’s a bit annoying that he doesn’t get a chance to show he’s a competent fighter but I get that’s not the point of this series.