80s WW2 Japanese film?

Any of you know which film is this? It's not about navy or air pilots, but mostly cave settings, the soldier went trial after the war...

Moved to Movie Questions. In the future, please take a moment to place new threads in the correct forum.

maybe Under the Flag of the Rising Sun 1972 which has flashbacks to the war and a widow petitioning the Japanese government to let her receive a pension.

The plot sounds similar to 1972 Under the Flag of the Rising Sun, but it's an 80s film...

I just found it, it's The Empire of Japan (1982)...