They sit you in an old building and ask you about yourself and your medical history. Then they document all this info before they have you sign a documents and waivers.
Accepted offer
Positive experience
Average interview
Application
I applied in-person. I interviewed at US Army (Evansville, IN) in Nov 2016
Interview
Asked if any criminal records, drug screen, checked out health, described a typical day, took the ASVAB, and talked to parents. Did a physical fitness test consisting of 2 min push ups, 2 minutes sit ups and 2 mile run.
Just go to your local recruiter and take the ASVAB. After completing OSUT, you'll become an infantryman (11B). You'll be assigned your unit upon graduating. Make sure to stay in good physical shape.
You express interest and they call you. You will have to answer some basic questions about yourself and take a placement test. Then you will be sent to a medical processing facility to do a medical exam.