Guy gets humiliated

The bearded, muscular man in full military gear forces the bald, tanned one into a kneeling position with tight red straps, his hands bound behind his back while the other adjusts the harness with a sharp tug. The short-haired, clean-shaven man stands rigid against a tree, his chest pressed into the bark as the dominant one secures his wrists with precise, unyielding pressure. Both wear gear that marks them as soldiers, helmets, harnesses, but only one holds the power to bend the other to his will.