Answer:
I know a word of letters three. Add two, and fewer there will be!
A great mysterious place that the bold have been known to journey into.
Bury deep, Pile on stones, My mind will always Dig up them bones
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.
What measures out time. Until in time all is smashed to it?
I am your mother's brother's only brother in law. Who am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?