I don’t want to shit on the Honor Guard - they serve their purpose for ceremonies and whatnot. But in my day that was always a collateral duty that one would take on from their real job… i.e. being a lethal fighting machine.
I briefly dated (that is - hooked up with lol) a lady who was on our Honor Guard at my last duty station, and it all seemed amateurish to me compared to the Soviet-style charade, which I’m sure the autocratic countries that do this frequently have legions of folks who drill and only drill as their only job.
To OPs point…. We, like…. fight…. and stuff