Should an Officer who was non-selected for promotion, and discharged at 16 years of service, reenlist to finish their 20?

What happen to the RIF program that existed after Vietnam, rather than discharge officers were offered the opportunity to take a reduction to an enlisted grade, usually E-5 or higher in the same branch ?

You should surely have considered it as a possible course of action. I served as an NCO before I earned my commission, and think it helped me. The fact that you have now been granted 100% disability may preclude any return to active service. And as you've indicated to MAJ Garbarini, you have decided to not return. Thank you for serving, and good luck in your future endeavors.

It's certainly a huge batch of humble pie, but I think it's worth it. Remember that you retire at your highest grade, so you'll still retire as an O-3 (I assume you have prior time, which is why you were asked to resign your commission rather than just being allowed to ride it out as a terminal O-4).

I say yes!

The short answer and most compassionate is yes, however, if so, what about the E5 that is unable to get promoted, or the enlisted that cannot get promoted in order to continue with his/her career. I have seen many Soldiers in my time that are awesome Sergeant (E5) but are unable to continue if not make SSG. Just remember what is good for one must be good for all. I am all for allowing them to continue, but perhaps the availability to enter the Reserve or NG. Honestly, the Army has changed so much since I retired that I am not so sure what else or what are the options. I retired in 2014 and I had a CPT that was passed over for Major and was allowed to retire as Captain.