He is the Commander in Chief of the military.
In the US, the President is defined as a member of the military; specifically, the highest possible rank. Saluting is expected.
No.
No, not particularly, although if in a formal discussion then there are rules that accompany such a situation, and if as a member of the military to his commander, then military rules apply.
The president is not a member of the military. It might seem strange to hear that since he is Commander In Chief. This is a very important point. The US military is ultimately under civilian control. Think about how important that is. What could happen if military authority in the US were independent of civilian authority.
The President of the US is the chief of the military.
President of the US.
A Military Courts-Martial.
Not publicly. As a military member, you are sworn honor your commander-in-chief.
The president of the US.
President of the US.
Obama.
President of the US.