You can have your education added to block 14. You need to bring proof that you completed the courses and have that with you when you complete/review your DD214 before discharge. I wouldn't put anything but important courses. Additionally having a 1059 for the course is more important than having it on your DD214. Your education isn't lost when you reenlist, but if you transition to the National Guard/Reserves they may not be able to access it. Then if you have a break in service you will have to prove thing again. This may be a little different today with everything being digital, but that is my experience when I transitioned to the National Guard.
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