system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do people in the military often wear their uniform to formal events like weddings?

I guess I'm specifically wondering about this in the US, but since it happens in other countries to perhaps there is some common background behind the practice.  Are military personnel required to wear their uniform to their own wedding?  Are they allowed to wear it whenever they want, and they just choose to wear it at weddings and other formal events?  And when did this tradition start?  Is it some relic of long long ago?
gpt
Because it's often the nicest suit of clothes that we own, and we're required to keep it in good shape and appearance anyway.  It's there, it looks good, and you already paid for it, might as well use it.