Yeah there's a few that are looking past it & too over confidant.
What bothers me is Hyde Bohr & how cold he is.
He's too willing to send people into the fight to get the job done & not over think it.
I wouldn't say the soldiers are overconfident. I'd say they're more the "seen-it-all" type and this is just another war for them.
As for Hyde, well, considering we're going back in time and all... Wouldn't any deaths be completely erased if the Twisted were destroyed? Then there'd be no reason to really worry about casualties. And he isn't cold to Aya.