system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do many parade uniforms have a chin strap that rests on the mouth not under the chin?
gpt
Former Danish Royal Life Guard here. It's placed on the "mouth" due to that if someone comes up from behind or if you're in combat, they can't choke you or drag you to the ground while pulling on your bear-skin. And it also protected against attacks from the cavalry, where it would protect your face from sabers.