Hux has studied a number of wars over the years; it's a necessity for his career, and though he's genuinely curious about the tactics and strategies for this supposed world-war, it's neither the time nor the place. He's tactful enough to get the impression that it's not something Peggy wants to discuss at length right now, anyway.

"Looks like there's something over there." He gestures to some buildings off in the distance. They're not that far away, but the sooner they get there, the better.