Is the classification as in "size/type" (like ships) unknown, or as in they've never seen it before and don't know what legion/squad/proper-term it belongs to? Anyway, I expect this tank to be shown in all of it's, no doubt, magnificent glory. Or you'll find me slightly irked. Explosions optional.

I also agree that those shoulder pads looks weird on panel 9. He's only on a slight angle to the left compared to panel 10, but they change dramatically.