I applied online. The process took 3 days. I interviewed at US Army (Fort Rucker, AL) in Mar 2014
Interview
Had a one on one with the guard boss. During the interview he asked standard questions about expectations and inspirations. When describing the job he was very vague about work hours and time off.
I applied through a recruiter. The process took 6 months. I interviewed at US Army (Orlando, FL) in Oct 2015
Interview
You meet with your local recruiter who then has you get prepared for the ASVAB test which is a test similar to a SAT Test, once you have taken the test and scored at least the minimum your recruiter will then show which jobs are available based on your ASVAB scores. Once you have selected a MOS(Job title) you will be put on the delayed entry program which gives a few months to get prepared to ship out to basic training. Meanwhile you will be going to the recruiters office weekly to train physically and do computer modules at home to get familiar to the military.
I applied online. The process took 4 weeks. I interviewed at US Army in Apr 2014
Interview
Relatively quick, semi formal in person interview at the university. Answered some probing questions intended to gauge legitimate interest and leadership ability. Scholarships vary by year, so a 4 year scholarship may or may not be very competitive. If so, they'll ask more about what you plan to do at the university. More prone to give scholarships to people that can reflect positively on the ROTC organization.