Last year I was looking into this as in Kef I wasn't awarded my Overseas Service ribbon or a second Commendation Ribbon. Not a big deal but was trying to spruce up the shadow box a bit.
Seems that BUPERS has very little records left from our years due to a fire or something. About all they could send me was a Certified Letter that says I was, in fact, on Active Duty from Sept 75 through Sept 79. My records are toast!
They can't even provide me a replacement DD-214. Thank goodness I made about 100 copies years ago...