Back To The Wall
In the military, when your back is towards the wall, it doesn’t mean that there is nowhere else for you to go. It actually means you’re safe because you don’t need to watch out for threats behind you. You only need to mind what is in front of you. Soldiers have the tendency to opt for a seat that has a wall right behind them even when they are back to civilian life.
Hospital Corners
Since neatness is a really big deal for soldiers, their beds aren’t an exception to this ideal. “Hospital corners” make sure that every single bed is neat and all the beds look the same. After all, it’s a bed uniform.