Now that Anime A to Z is over, I can share one of my favorite pieces of Yukari Akiyama fanart. (She began that list, of course, so I wanted to avoid repeating while that feature was still running.)
This scene is completely in character, and the added touch of one of her reconnaissance videos playing in the background gives it that extra bit of realism. Yukari probably spends most of her free time building tank kits. Or reading about tanks. Or watching historical films with tanks in them. You get the idea.