Answer:
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. What am I?
I am a popular afterlife location to send evil people
Always in you, sometimes on you. If I surround you, I can kill you. What am I?
I am owned by Old McDonald.
I am the noise Santa's reindeers make
What never gets any wetter no matter how hard it rains?