Every football team has a chain of command. Just like the army, decisions go through a chain of key personnel before ultimately being executed by the players. That chain of command looks like this for an NFL team:
Football Coordinator Jobs
KEY TAKEAWAY: There is a chain of command on every football team where decisions and play calls travel through. Coordinators are usually second in command just under the head coach.
The football captain communicates orders from the coordinators to his fellow players. For the offense, the captain is typically the quarterback.