Answer:
Turns us on our backs, and open up our stomachs. You will be the wisest of men though at start a lummox.
Many have heard it, but nobody has ever seen it. It will not speak until spoken to. What is it?
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.
I know a word of letters three. Add two, and fewer there will be!
What holds names and memories which are not its own?
Strip the skin under my skin, and my flesh you'll reveal. It tastes sweet and tart, now throw out the peel. What is it?