Answer:
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
Dead on the field lie ten soldiers in white killed by one blade yet there was no fight. What are they?
I've been argued on my color. Without me you'll die. So many attempts on your life use me so make sure you have many of my White friends.
My keepers feed me colored balls. With sticks they store on my den walls. Sometimes I store them in my pouch. Sometimes deep in my belly; ouch!
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.