Anybody can request his DD-214 through a FOIA filed with the office that keeps records on military personnel. Don’t recall the name of the office, but its in St. Louis.
https://www.archives.gov/personnel-records-center/foia-info
The Freedom of Information Act (FOIA)
The Freedom of Information Act, or FOIA (5 U.S.C. 552, as amended), generally provides any person with the statutory right, enforceable in court, to obtain access to Government information in executive branch agency records. This right to access is limited when such information is protected from disclosure by one of FOIA’s nine statutory exemptions. Click for more information on the Provisions of the Freedom of Information Act.
FOIA and Official Military Personnel Files (OMPF)
The public has access to certain military service information without the veteran’s authorization or that of the next-of-kin (the un-remarried widow or widower, son, daughter, father, mother, brother or sister) of deceased veterans. Examples of information which may be available from Federal (non-archival) Official Military Personnel Files (OMPF) without an unwarranted invasion of privacy include:
Name
Service Number
Dates of Service
Branch of Service
Final Duty Status
Final Rank
Salary *
Assignments and Geographical Locations
Source of Commission *
Military Education Level
Promotion Sequence Number *
Awards and decorations (eligibility only, not actual medals)
Photograph
Transcript of Courts-Martial Trials
Place of entrance and separation