In my mind, there’s In This Corner of the World and The Wind Rises if I want something like a documentary.
For a narrative, it’s Attack on Titan Final Season and 86
In my mind, there’s In This Corner of the World and The Wind Rises if I want something like a documentary.
For a narrative, it’s Attack on Titan Final Season and 86
The Saga of Tanya the Evil does a surprisingly good job of it, considering it’s an isekai about flying mages.
Much of it is not-Germany fighting not-Russia while not-Italy are acting as neutral peace facilitators while not-UK are harrying the western flank, and they’re worried about the not-US getting involved and screwing up the balance of power. Lots of politics and strategy mixed in with some good action.
Mainly in the show, Franz Ferdinand was never shot, so WWI didn’t kick off until a decade later, but the Russian revolution still happened anyway (which is by far the weirdest historical detail about the show imo) and somehow their version of the USSR stabilizes 10 years early.
Since it takes place in interwar years, you effectively have Imperial Germany fighting in what’s a blend of WWI and WWII. Since Germany’s overall strategies (Schleifen Plan/Blitzkrieg) were effectively the same between both wars it’s fairly believeable.
And in the show it’s pretty clear that there’s no side that’s an unequivocal hero. They all sucked themselves into the war and are stuck in it, just like WWI.