Answer:
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. What am I?
I cannot be burned in fire or drowned in water. What am I?
I am the only thing that place today before yesterday. (one word)
I have two eyes in the front and a lot of eyes on my tail. What am I?
Light me up in backyard gatherings
I have thirteen hearts but no body or soul. What am I?