When we were taught about the war it was pretty straightforward, all dates and treaties and operations, but it didn't go into detail about the innocent people on both sides or the aftermath. Grave of the Fireflies was a very striking view into the hardship that comes after war and that isn't talked about in school, which I understand, considering we're talking about teaching children.
Having grown up in the US, war is often talked about in a very black and white way, where one side is seen as inherently evil and the other is good. Obviously, war is a lot more complex so I'm glad to be able to read and watch more nuanced depictions of war.
I still don't plan on watching it again though, lol. Three times is two times too many.