Realistic path from enlisted military to IB?

Former 0311 here and that was my roadmap. However instead of going to a target after CC, I went to a extremely non-target state school majoring in finance due to an unexpected divorce, but I still broke in to IB at a BB. I had to network a lot harder than my peers who came from target schools, but I still managed. If I were to do it again, I would’ve gotten a degree in engineering or computer science and not finance because while I might have had a leg up during the first few years of my career, my peers who majored in STEM were just as capable and also had knowledge in other fields other than finance. I would’ve also utilized resources like Service2School and VetsonWallstreet to help me aid in networking.

Now the things that I believe helped me succeed in breaking in:

1. Utilize your Veteran network. You’ll be surprised on how many grunts there are in this industry and I believe it’s because we know how to get shit done on little sleep working through the night and still perform the morning after a night of binge drinking, all the while getting berated by someone superior over bullshit. That’s just my personal opinion, but you’ll find plenty of service-members willing to help you out, but only if you reach out to them first. Linkedin is a great place to start. Also try to talk with the officers in your company or battalion. Chances are they have friends from college in banking and wouldn’t mind setting up a networking call with them, especially if you are a stellar Marine. 
2. Resume. No one cares how badass your job was and how you know how to locate, close with, and destroy the enemy by fire or maneuver. While that sounds cool, it doesn’t showcase the complexity of our jobs as infantryman. People who weren’t in combat arms can’t understand it. Think about giving instructions to POGs and fresh boots and how you have to translate what you know in a level that they can understand. Likewise, you have to change the way you describe what you did to make sense to civilians who are looking to hire you. For example, if you were a team/squad leader, you can showcase how you were an effective team player and leader who was able to comes up with solutions to complex problems with the information you’re given in a timely manner. You want to relate it to what you’ve done as this is just a general example. 
3. Stay humble and be willing to network and learn from those who are much younger than you. I was in my late 20’s and was networking with associates who were still in high school while I was getting shot at in Iraq, but guess what they’re the SME in the field and they know a shit ton more than you and if they’re willing to sit down with you, don’t do anything to scare them off. I’ve seen too many vets squander their chances because they can’t let go of their pride. Again, no one cares how badass you were as a grunt, because most civilians can’t differentiate between a grunt and a POG anyways. They just like that you served and that should be enough for all service-members.
4. Reach out and apply to every bank that you can. AND I MEAN EVERY BANK. Many banks have veterans programs to give you a leg up, except for you JPM. You have one for the UK but not for the country you were founded in SMH. 
5. I don’t know what they teach at  SEPS/TAPS now, but when I went through it it was pretty useless for breaking into finance. Unless you’re trying to get a government job, it’s fucking worthless.
6. Have fun in college. It’s ok if you don’t get an internship as a freshman or sophomore. But make sure you get one as a junior. Utilize the GI Bill and all the resources that the school has to offer for vets. There’s a lot. Travel and fucking decompress. Just don’t go too wild. 

Your roadmap is entirely feasible. You just have to be dedicated to your plan while being able to persevere even if you plans don’t go accordingly. 

Good luck and Semper Fidelis.

Edit: I also just realized you said infantry Marine and not infantryman. Oh how the times have changed.