There is an extensive process where the Army verifies that you are capable of entering the service. This includes a physical, drug screening, and various other tests. Once you are cleared to work for the Army the recruitment process is fairly quick.
I applied online. I interviewed at US Army (Bury, North West England, England) in Jul 2017
Interview
Showed a presentation and outlined a few key aspects. Then asked very in depth questions during the interview which took 40 mins. Different variation of questions such as why the army? and asked about the army structure and current opperations.
I applied in-person. I interviewed at US Army (Cedar Rapids, IA) in Jun 2013
Interview
I called the recruiting station to schedule a face-to-face appointment. I came in, did a prerequisite interview to answer questions that could disqualify applicant. filled out some paperwork, signed.