Answer:
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. The wind is my lover, one-legged am I. Name me and see me at home in the sky.
Up on high I wave away but not a word can I say.
What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?
What does no man want, yet no man want to lose?
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?