when the post is author
forgot the authpost
I'm sure there's a lot more military isekai, but from what I've seen, it's all jingling keys. You wanna see Jane and Joe Human square off with dinky fantasy races, using service rifles, grenades, and whatnot, and triumphing over them? We had that in 1994; it was named Stargate, and it was fucking awesome. (That's without mentioning SG-1.)
This is the beginning of an attempt to write a military isekai that isn't jingling keys. There's gonna be a lot more explanation about my own isekai logic past "oh, they just kinda go there," and it may involve remote viewing.
"Best not to think about it" is a morally grey defense for your writing.