For me the single most historically grounded animated depiction of war is 'Barefoot Gen'. The film and the manga it's based on are raw in a way that most animated war stories shy away from — there's no romanticizing, no heroic last stands, just the terrible, everyday consequences of a nuclear attack on civilians. Keiji Nakazawa drew on his own survival of
Hiroshima, and that firsthand perspective bleeds through every frame: the burn injuries,
the breakdown of social order, the grinding hunger and the way normal childhood is ripped away. It reads and looks like testimony rather than spectacle.
I also think realism isn't only about literal facts. 'Barefoot Gen' nails the social and medical fallout — the mistrust, the rumors about radiation, the collapse of services — details that
history books mention but which many films gloss over. If you're curious about the broader context, pairing it with contemporary survivor accounts or Nakazawa's manga deepens the understanding. Watching it, I always feel like I'm seeing a piece of lived history, and it stays with me long after the credits roll.
Other animated films like 'Grave of the Fireflies' offer a similarly unflinching civilian view of wartime suffering, while 'Waltz with Bashir' is more about memory and trauma than factual reportage. But if your standard is fidelity to a specific historical event and its human consequences, 'Barefoot Gen' is the one I keep coming back to — it unsettles in the best, most honest way.