Turning the standard JRPG plot on its head

[ECSNorway]

I recall reading (at least part of) one light novel that this reminds me of. The MC was an Admiral of the space fleet and a war hero, but due to shenanigans (and a conspiracy against him by a rival in the high command) was stuck in suspended animation for, like, 50-100 years. He wakes up to find that he's remembered as a hero... but of course everyone thinks he's dead and no one believes him when he claims to be the dead hero. So he enlists, or maybe gets drafted, and has to work his way up and figure out what's going on.