Girls und Panzer has more fanservice for the tanks than the for girls, which in turn makes it more interesting and enjoyable for those of us who don't get turned on by animated high schoolers. It has an interesting blend of 3D and 2D animation that was utilized quite effectively, and the characters on screen make you laugh.
The music is very patriotic, but overall fits into the military sport theme. The animators did a great job using the tanks to create interesting camera angles that pan with the turret or go up and down to mimic the tank rolling over uneven surfaces.
Again since I tend to watch a lot of shows that have big casts (like Kan-Colle) I think Girls und Panzer does an excellent job of introducing all the characters, and even make you care about them. Sure, they may be stereotypical and can be found in any comedy anime, but I enjoyed the gradual introduction to the different teams. Compare this to Kan-Colle, which is aimed directly at fans of the game and therefore doesn't provide much introduction to the different classes for viewers, and High School Fleet which after just watching this afternoon I'm struggling to remember the main characters name.
Overall, if you have watched K-On or Saki or Strike Witches and had a good time, you might like a slightly more niche anime like Girls und Panzer. No, it's not realistic, and yes it has cute high school girls driving tanks all mysteriously wearing skirts that never get blown in the breeze and expose panties, but in the end it was a good laugh.
