I know most people know this as a kneel, but one leg is standing. Just gotta somehow get more than 50% of your weight on the standing leg, thus technically resting the back knee, and this would be kneeling, while standing.
I hope US enemies don't find this. They could use it to force US soldiers to stand up during engagements and then force the US soldiers to kneel when they're doing fire and movement.
It is prohibited to make use of the flags or military emblems, insignia or uniforms of adverse Parties while engaging in attacks or to shield, favour, protect or impede military operations
This one weird trick defeats your enemy in seconds and makes you a war criminal.