A hopefully simple question: Is the president allowed to be an active member of the armed forces?

 

I ask because in my country when our king was crowned he had to resign from all his military posts because the civilian government regulates the military and the king is head of the government. If he remained in the military that would mean the military would be effectively be regulated by the military and you can see why that's not a desirable situation.

 

I know the POTUS is the commander-in-chief but his power is also limited by design by having Congress hold quite a bit of control over the military. And it would seem to me that allowing the POTUS to be an active member of the military would create a similar undesirable situation as it would with our king.

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