I dont really see it as a movie I've always kind of imagined it in my head like Maxmillian Uriate's White Donkey.
So basically you take that idea of a real life dude and his deployment time in Afghanistan, add a sci fi element to it (since I was an Aliens buff mine was always some sort of giant space bug) and then you flip it to the USA and basically have a day by day story of a soldier as he's going through trying to contain a infestation of giant space bugs. But instead of a bunch of hollywood tropes have the real life weirdness of what it is like to be in the military.
Mine would be a slow burn story with action/horror sequences being kept at the very minimum.
Sometimes I have the idea in my head to tell it non sequentially.