Its against the fraternization laws of the military and its in place for good reason: There can be no preferential treatment in your chain of command. All kinds of disasters take place when others find out about a relationship between a subordinate and their superior.

Can you smoke in uniform?

Smoking: There is a lot of variation when it comes to the regulations of smoking. Some installations dont allow it at all in uniform, others may allow it while standing, and in some instances its permissible at all times. Often, uniformed members are not allowed to carry an umbrella.