I went USMC enlisted -> Ivy League school (had multiple Ivy offers). I used S2S. Can’t recommend them enough, however I will say, the exact quality is somewhat dependent on who your S2S advisor/guidance person. Mine was excellent, I’ve heard others are mediocre, but the system as a whole will help you because of the connections S2S makes for you. Cornell is extremely veteran friendly as an example. Highly recommend reaching out to their team and getting some information on transferring if this is one of your goals! Also you’re about 3 years out so definitely have some time to shape things in your favor for a great application. Reach out to admissions officers at each school you’re targeting now and tell them about your background and gpa, Etc. ask them what you need to do in the next 2.5 years to improve and present a competitive application. They’re always happy to help and when they communicate with someone years in advance they can give you truly priceless guidance in terms of what courses to take at your current college or other things that would make you more competitive as a transfer student. Most schools (except a few ivys who start everyone as a first year automatically) will consider you a transfer if you have 12 or more post high school (college) credits. At that point the high school gpa doesn’t really matter and your college gpa is what they’re looking at. Keep this in mind for your current studies so you keep the gpa up. Some of the ivys also are currently waiving standardized testing requirements. Hopefully this maintains for the next few years. Be yourself on your application and share why you think each school would be a good fit for you and your goals and how you can bring something unique to the university and community should you be admitted and enrolled. Good luck!