My new unit says I don't qualify for the Overseas Service Ribbon awarded to me by my previous unit. Are they right?

Present your findings respectfully to your PS. See if he agrees with you, he can work with you to get leadership to get it reinstated through S1. If he flat out rejects you, & you still feel you're in the right, ask him to go with you to your 1SG to get their opinion on it. If he still refuses to see the 1SG on it with you, use your 1SG's open door policy to show your evidence and get their opinion. Take it as far as your CSM, repeating the steps, using your own belief in the strength of your research. I gotta echo someone else's argument that this is BS! You went. You served. You came and went on the days they told you to. You're not some buck PVT who shows up in garrison, didn't get deployed and complains to the CG about being butthurt about feeling left out because they don't have a deployment patch and everyone else does because they've been deployed. It's said to have happened at the 101st after I left... or at 4ID after I got there according to a quick internets search. If they didn't deny you a CIB, CAB, or CMB, they should stop being fussy over a ribbon! That or it's a tight a@#ed S1 (officer, NCO, or the section in general).

I think that you don't get the OSR if you received another ribbon or medal for one reason or another.
I was assigned to Germany twice and Korea once.
Because I received the KDSM I was only authorized the OSR with a 1 instead of a 2. OSR+1 = 2 overseas duty assignments of X days if that makes any sense to you. Don't know how many days you had to serve...I think it was 180 days...

If this was presented to you with it on your DD214 your golden. You have an order giving it to you again should be Golden too!

Did the deploying unit award it on your Statement of Wartime Service? Is it on your DD214? These would be source documents that you could refer to along with a copy of the regulation IN EFFECT AT THE TIME of the award.

I served 18 months on Okinawa 1974 -1975 do I rate oar ?

I’m back ! All these Sr. NCOs have gave you the bad news... Good news is you may get to go again... find another unit that is due to go.. maybe you could transfer and go with them and you could pick up your remaining time and a oak leaf for an additional tour..
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I don’t know if this had any relation....
Back several years ago us Guys in Services(AF) were due to get a new specialist badge.. turns out there were not enough of them, so they delayed the badge to the next year but made it retroactive for any that separated under normal circumstances and wanted it in their record .. Some Veteran’s, like myself were in Veteran Service orgs that required a member have applicable awards to be worn documented on DD 214(215s).. I for one am proud of being in Services and a Cook/Baker Supervisor.. 62270(3M these
days. I got my DD215 with it on it back to me in very short time.., I do have, have had people ask what it was for and I am proud to explain it to them.. one guy asked why would I be proud to be a Cook/Baker Supervisor in the AF... I asked them if they they were proud of what they
Done.. I suppose not e’body is,, some may have had a occupation specialty nobody wanted.. Doesn’t matter, The
Wheel of the Military has many spikes and all are important.. take out a spoke, the wheel becomes weak, take out 2 or 3 or more it gets wobbly in time.. So every occupation is important. Many years ago
Civilians couldn’t be in certain areas where the danger of being killed was prevalent. Of course there are contractors for man occupations.. but not even some of them can go everywhere..
Anyway here is my rack and specialist badge...

Do all that you can Soldier ! Much good fortune should you succeed... it is good you have your documentation.. Seriously I don’t see why they are all knotted up over a $1.50 O’seas ribbon it wasn’t your fault you were shorted a couple weeks on your tour. Heck, the whole company was ! Maybe if you all went and took some Senior NCOs and an Officer with you
Maybe those in charge will give in and send you all to Adak, Alaska.. to make it up to you..

This takes out all the guessing about months and redeploying early etc...
Army Overseas Service Ribbon is awarded to all members of the Active Army, Army National Guard, and Army Reserve in an active Reserve status for successful completion of overseas tours if the tour is not recognized by the award of a service or campaign medal.

I suggest you talk with an "admin guru" like a MSG at brigade HQ. I have devoted a lot of time to studying Army award regulations but, for some strange reason, the interpretation of the regs regarding the OSR is inconsistent. Take if off you uniform for now so you don't cause a problem for yourself and then look for an expert opinion. Remember - even if your 1SG is wrong - he is still right.

Editorial comment - The OSR is the second to the lowest award in the Army and its qualifications seem to be the most ambiguous. It seems like its criteria should be simple but, judging from the discussion thread, it is not. How about this -

"The OSR will be awarded to any Soldier who completes a continuous overseas tour of duty of 8 months and 15 days or longer or for a non-continuous tour of 1 year or longer provided the 1 year requirement is met within a continuous 15 month period. Periods of leave or temporary authorized absence will count towards the above time requirements. Upon completion of two consecutive years of overseas service the OSR will be awarded and the time period for a subsequent award will begin. The OSR will not be awarded for any overseas tour of duty for which a campaign or service medal is awarded unless there is a specific exception to policy authorized by a DA general order. For the purposes of this regulation, overseas is defined as outside of the continental United States. Subsequent awards will be indicated by a numeral or numerals corresponding to the total number of awards of the OSR."

Is that too freakn' hard?

Congressional screw that S 1