US Army 11B question?

I'm thinking about enlisting in the Army in about a year or so and was wondering what I would actually be doing as an Army infantryman. I want to get 11B infantry and a slot in an Airborne unit however I heard as an 11B your basically a glorified janitor. I heard that you clean the halls, pick up trash and clean up dirt. I just want to know if I'm an Airborne infantryman in an Airborne unit will I actually get deployed and fight the enemy and use the infantry skills I learn in OSUT and Airborne school or will I just sit around all day cleaning and being a janitor. I know war isn't like videogames and movies however I would like to deploy and fight and do what I actually trained for.