Answer:
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
Everyone has it and no one can lose it, what is it?
I cannot be other than what I am, until the man who made me dies. Power and glory will fall to me finally. Only when he last closes his eyes.
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.