Answer:
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. What am I?
I belong to you but others use me more often than you do
If I have it I don't share it. If I share it I don't have it. What is it?
I go in hard come out soft. Blow me hard and I’ll make a pop.
I am a protector of the scoreboard.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.