Answer:
There are millions of me. I am very small but when moving fast I am deadly.
He has married many women, but has never been married. Who is he?
The more of them you take, the more you leave behind. What are they?
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
My love, when I gaze on thy beautiful face. Careering along, yet always in place, the thought has often come into my mind. If I ever shall see thy glorious behind.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.