Must go to an Army Recruiting Center and take an entrance exam to determine job qualifications. Once qualified, there is a medical examination and background check. The recruit then goes an select from a list of jobs.
I applied through a recruiter. The process took 2 weeks. I interviewed at US Army
Interview
ASVAB test and other tests, depending on specific job. For the most part, if you can do well on the test, you can do whatever job you want. Background investigation, depending on need for security clearance. Drug testing and physical for everyone.