Army lingo help needed

[feddoc]

I'm trying to find out more about a VN Vet.

What does this mean?
Thanks

Sel. Ser. Date v50 27 47471


Trans to ASAR (see#16)


Sec vII CH5 AR 631-200 s_n 412

(i can't make out the letter between the s and n)

Line number 12 reads: cd trp comd. USAF Sareur

#14 reads: Trans to USAR cont Gp (reinf) Usaac St Louis


Reinlistment code RE3A

SPECIALTY #76P Ostk cot. Acc. Spec

 

[KattTraxx]

Looks like the narrative on a U>S> Army Separation Document (Discharge Orders).
With a Renelistment Code of RE-3A, it might be possible to get back in the service, but the best RE Code is RE-1..