[Riley]

There's a German-made file about Stalingrad (early 1990s, IIRC) that is also exceptional in terms of gritty realism. Talvisota, the 1989 foreign film about the Winter War in Finland does well in that regard, too.

I have both of those and the recent Japanese production, 'Yamato' and the Russian film 'Ninth Company'.

[Charles Martel]

I recently noticed some clips of Yamato on YouTube, but haven't yet given it a serious look. At first glance, it does appear to be well-crafted.