Is it obligatory to obey the directions and signals of a military policeman, even when a certain direction or signal is opposed to the traffic signs?

1. Correct answer: Yes, it is obligatory to obey with full caution.
2. Yes, except for directions which contradict a no-entry sign.
3. No, it is not obligatory to obey
4. Yes, except for directions which contradict a stop sign.

WhyYou obey a military police officer even against the signs, with extra caution. There are no exceptions for 'Stop' or 'No entry'.