Lots of paperwork to turn in. Must take an exam and pass. For 37F, must take a security clearance class in order to be considered. It was fairly easy, just reach out to an Army recruiter.
Interview questions [1]
Question 1
Why did you want to join the Army? What are your plans in the Army?
I applied in-person. The process took 12 months. I interviewed at US Army (Durham, NC) in Jan 2018
Interview
It is a selection process that is several days long. Upon acceptance to the program, you undergo language and specialized training that lasts anywhere from several months to a year plus.