The fight broke out Monday night, which was Hispanic Heritage Night at the park. The person who shot the video said the fight started when someone was using racial slurs.
"Dudes were racist," Danny Rockett, the fan who recorded and tweeted out the video, said in a tweet Monday night. "Didn't see the first punch. But I saw the 3rd-56th."
A fan who stepped in to intervene can be seen and heard repeatedly shouting "There's no fighting in the bleachers!"
No one was arrested or seriously hurt, though a Cubs spokesperson said everyone involved was interviewed and banned from the park for a year.
One of the individuals involved in the incident is an Indiana National Guard soldier, according to a statement issued Wednesday by the Indiana National Guard. The statement said: "The statements made by this individual are not in keeping with the Army Values, and they do not reflect the views or beliefs of the United States Armed Forces, and specifically, the Indiana National Guard. We take these types of situations very seriously, and the conduct of this individual is unbecoming of a service member. The Indiana National Guard is conducting a thorough inquiry to determine the details surrounding this incident."
KTRK-TV contributed to this reporting.