My husband was in the National Guard. I took him to an office Christmas party. Without knowing his background, one of the other spouses at the table could tell that he was former military. How? By how fast he ate his dinner. Soldiers aren't given much time to eat their meals, so they learn to eat fast, and I guess old habits die hard.
Shit, I learned to eat fast because when I was a kid, my brother and I lived with our uncle for a bit. He had a rule saying if we weren’t done eating by the time he and his wife were, we’d wear it. “Eat it or wear it”. My cousin, his 3 year old step daughter didn’t want to eat spaghetti that day. His wife dumped the plate on her head. Since then, I’ve been a fast eater.