Isn't this like the oldest trick in the world since the discovery of blackpowder? Putting your helmet on a stick or your rifle and showing it to the enemy, to know if they might be aiming at your position or not?
I just remember having read about the war in north Africa during WWII, where the Africa Corps and the English were fighting, pushing each other back and forth and certain places changing the owner over a dozen times in the process. The parties started to mine EVERYTHING when they were setting back and abandoning the houses they occupied, and some kind of "contest" emerged, where mining the door or the doorknob was considered really boring. It became so dangerous to touch anything in a location you just conquered, that even putting right a picture on the wall which was on a slant could get you killed.
That is more of a creative war trolling, IMHO.