How did everyone choose which MOS to serve as?

I chose Infantry and Paratrooper even before I ever heard of MOS, and it was the right choice. What ever you do choose, do the best you can, and learn everything that has to do with that MOS.

Knowing I had a rather low draft number, I'd heard about military broadcasting while in junior college for communications. I went to the Army recruiter and asked about Armed Forces Radio and TV. He looked up the MOS(71R20), found the school was full at the time I would be finished with basic, so he signed me up instead for Military Journalism (71Q20) because it was in the same building as the broadcasting school. He said, "Maybe when you get out there you can work your way into the broadcasting school." Which is exactly what happened. I went on to enjoy three years of radio and TV work in West Berlin.

In my case it chose me ,guess it was in my stars to be a 11 Bravo,unlikeliest candidate ever ,under weight, four eyed, street corner punk from the city but with the guidance of some memorable Training NCOs and plain old dumb luck actually made a pretty good soldier after all.