 If you liked
Zipang
|
 ...then you might like
Flag
|
The two anime do share a critical and fairly realistic look at military personnel, tactics and the geopolitics behind it all. There is no mecha in Zipang and, thanks to a glitch in the space-time continuum, it takes place at a critical point in WWII rather than the present. If you enjoy thoughtful anime, and military themes, I recommend both Flag and Zipang.