>>63994117
Assuming you mean his Showa series, I for one just finished reading that the other day. I knew that Onward Towards Our Noble Deaths was heavily influenced by his own experiences in the IJA, but had no idea that so much of it was pretty much directly lifted from what he actually went through himself.
Going on a tangent, it was kind of jarring to see Nezumi Otoko (a sleazy scumbag character of his from Gegege no Kitarou, for those unfamiliar) starring in it as a well-spoken narrator.