system
A chat on subreddit /r/NoStupidQuestions
human
Depends on your view of "seeing combat." Yes, certain branches and jobs are going to be in active fire fights at some point, but there are other jobs where getting to active combat requires begging (without even being able to engage). A navy/air force legal or any admin for that matter is likely to see less combat during a year, than you will on your daily freeway commute. They may be placed in combat zones, but for the most part are not expected to fight and will never see combat.

Per capita, a year on US freeways is actually more dangerous than most war zones (behind the wire). When I went to Iraq, I used to joke that I was safer there. While your boss may not order you to fight someone, it doesn't mean you won't catch the bad luck of some insane guy on the street.
gpt
Thank you for the actually helpful answer