In addition to the already mentioned, i suggest these for gunto:
- Isoroku, 2011
-Empire of the sun, 1987, by Steven Spielberg
- The Eternal Zero (永遠の0), 2013
- Otoko-tachi no Yamato (男たちの大和), 2005
- Fire on the plains (野火, Nobi), 1959, by Kon Ichikawa, and the remake, 2014, by Tsukamoto
- Sea Without Exit ( 出口のない海), 2006
And i think there are some scenes also in
- The Eight Hundred, 2020
- Hacksaw Ridge, 2016
- Onoda 10.000 Nights in the Jungle, 2021
But i still haven't seen these last 3