My recommendation, go to a different school, such as a community college or lower level university. When applying, do not ever mention you have taken any classes and do not transfer your grades over. Start over from the beginning and do your best. I mention starting at a community college or lower level university so you may redevelop your study skills. You may transfer to a higher level university after your Associates degree has been earned and your study skills developed.
For now, when you wake up each day, remind yourself how badly you wish to go to school so you do not need to put up with the military BullSht any longer. When you start taking classes, your drive to improve your life so you never have to return to an enlisted career will be a constant reminder to continue pushing until the homework is finished.
This advice is coming from a prior enlisted E-5, with 6 years in the Navy, who started at a community college then transfered to an engineering school to finally graduate with a computer science bachelor's degree in engineering. The work through school is well worth the final result of possessing a higher educational level than the division officers whose orders previously had to be followed.
Ask any advice you like and I will do what I can to assist.
EDIT: Some states provide varied levels of veterans educational assistance for veterans who return to the same state they joined the military from. Check to see if your state provides eduational benefits to returning veterans. For example, my state of Illinois provides 120 semester credits worth of free tuition for returning veterans.