Kyoukaisenjou no Horizon, Girls & Panzer Recommendations
"War game" between countries and fun to watch war tactics.
If you followed the discussion for each episode, you'll see that the fans has a lot of knowledge to share too, going far outside of the stuffs presented in the anime itself.
Nice attention to the details that would add to the rewatch value after gaining more insight to that episode.
They even have staff member doing dancing to the animation staff for reference. :D
The difference being Horizon has a lot more political theme into it compared to the more light hearted Girls & Panzer.
Also, Girls & Panzer sets the bar high by aiming for the geeks, that