I was in the Marine Corps back in 94. I was discharged for a minor medical reason. In all reality I should never have been discharge. I will share more on that later.

I received a OTH discharge, and an RE-4.

I have tried to get my re-enlistment code changed but it was determined that I got the correct one.

What I would like to know if it is possible to join the National Guard. Do my time there, get out with an Honorable discharge and recieve a better re-enlistment code.

Would I be able to join with the DD-214 the National Guard gives me?

RE 4 and an OTH. No I don't think the NG take you on your 214.If you were discharged for Medical Reasons I can see the RE4 as pertaining too "not being able to fulfill the phyiscal requirements due to health or injury. Not Acceptable for reenlistment. "

But the OTH. Whats the real story?

The only reason I can think you would have gotten an Re-4 accompanied by OTH would be fraudulent enlistment, but this would depend on how much TIS you had. Did you lie to the Marine Corps about a previous condition/injury?

As 03 said, the National Guard will not even look at you, most likely, with your 214 reading as it does. You may try and get your discharge upgraded, but if the med board saw no reason to upgrade your RE-4 to RE-3, it will probably be of little help.