He does, indeed, know what soldiers are. The explanation gets a nod of the sort that's more I'm-paying-attention than a yes, but he notices when she gets uncomfortable, too.

He's not good at comforting, though he tries. "If there's fighting you can't handle, come find me," he says. "Even if I'm with another team at the time. It's one of the things I'm best at." One of the things he's made for, and if he could he'd have words for the person who made blades that way, but that's not something to burden her with.