Answer:
What is as big as you are and yet does not weight anything?
Five hundred begins it, five hundred ends it. Five in the middle is seen. First of all figures, the first of all letters. Take up their stations between. Join all together, and then you will bring before you the name of an eminent king.
A word I know, six letters it contains. Subtract just one and twelve remains.
What is the freedom of birds and the pen of old men?
You heard me before, yet you hear me again, then I die. Until you call me again.
Known for their natural tuxedos and marching.