Well that and Shimada Humikane was in charge of character design for both shows (and Sky Girls). I'll admit, Girls und Panzer is okay though it isn't necessarily historically accurate. If you have a good understanding of each tank's technical capabilities then the copious amounts of plot armour present in the series might bother you a little. Not to mention things like burying a tank in snow which would flood the engine or shutting down the only school on a floating city because said school lacks any accomplished sportsmen but if you can look past the questionable writing then it's still more entertaining than Naruto; which still seems to have a following of sorts, even on this forum. To those people, I can definitely recommend Girls und Tank. Otherwise, your mileage may vary.