[Dimitri carefully studies the basic map that Claude had drawn out for him. It's recognizable enough to figure out where he's referring to. He'll just have to make a note for himself as a reminder on where specifically to look when the time comes.]

Underground...that would certainly explain a few things. Their ghastly pale skin, for starters.

[He listens to Claude's warning, as well, and nods in response. He's really likely just to bring as much of his army as he can manage...but then a realization comes to him. Byleth had mentioned that Cornelia was among their number. So, then...]

This technology you speak of...it wouldn't happen to include massive suits of armor, would it? Like giant humanoid beasts made entirely of metal? Because if so, I at least have some experience. When I led my army into Fhirdiad, Cornelia's forces deployed such constructs against us as a part of their defense.

I can't say I enjoyed fighting those.