It's about girls, in tanks, shooting at each other.So yeah, in short, in this world, students go to school on giant air craft carrier type ships and they have "tankery" as an elective to choose. It helps them in tactics and something... anyways, they are an underdog team and work to go to a championship. I don't want to give it all away.... the plot is much better then what I said. Each school represents a different style and sort of a different nation (kind of). It is available in English and Japanese with dub. Both are well done.
I like the tanks because I'm kind of a WWII fanatic. So my friend and I watching it were like gushing over the tanks. And I think I'd die a little if someone like, acted like they knew what they were talking about and got some of the tank stuff wrong. But yeah, I definitely love Girls Und Panzer. It's a great anime with amazing characters. Easily in my top 5.