Where can you find Vietnam veterns who were in the war with y father?

1. The Vietnam War was the LAST war in which servicemen were issued a SERIAL NUMBER. Having your father's serial number would help your research; most US Servicemen from Vietnam will have TWO numbers-SSN & Serial #. Go by the SSN; but the serial number will assist you; Vietnam was a transitional period for the military. 2. Contact the VVA (Vietnam Veterans of America); this is vet organization, the same as the VFW, American Legion, AMVETS, etc. The VVA was founded by Viet War vets; the VFW was founded by Spanish-American War vets in 1899; the Legion was founded by WW1 vets in 1919; and the AMVETS were founded by WW2 vets in 1944. 3. Each Unit (Division, Regiment, Squadron, Battalion) normally has a website. When you find out which UNIT your father was in, go to that site.