PTT,
OK, unarmed combatant walking slowly under a white flag. Easy.
Enemy soldier about to fire upon you - equally easy.
How about...you are storming a machine-gun post. Somehow, you survive and reach the enemy position. At this point the enemy gunners put their hands up. They were happy to kill you right up to the point that it appeared that they were going to lose. What do you do?
What makes you think that the enemy in the video were no longer combatants?
Would you stake your life upon it? And your gunner's? And your wingman??!
Don't judge combat from your armchair!
..Beam me up.