Perhaps you could try checking out this site:
Shipmates.com Helping find, locate and get in touch. Old friends and buddies. Reunions, Organizations, Associations.
Don't let the name of the site discourage you. It's not just for sailors/Navy.
The site lets you search it's databases for all service branches. And you can register so others can locate you, too.
There are also links on the site to other useful sites.
I hope this information is helpful. If nothing else, it seems like a good place to start your search.
Good Luck!
Contact Veterans Affairs or the American Legion.
Contact veterans affairs. It would help if you have his SSN.
Find a veterans group of the same unit; That would be the quickest way.
There are many websites by or for Vietnam Veterans. If you know what unit the vet served in, do a search for that unit. They might have an association to get veterans back in touch with each other. Click on the link below to see an example of a Vietnam Unit association website.
Find your local VFW ( Veterans of Foreign Wars) chapter
Contact your local Va Hospital they may be able to put you in the right direction for your search. http://www.vetfriends.com/index.cfm?source=google&keyword=veterans
You can get in touch with your local veterans administration as they have all information documented about our servicemen regardless of when they served. Be sure to have any DD214s (if applicable) to make it easier for them to research your request.
Try the Veterans of Foreign Wars (VFW) , The American Legion or other WW2 service organisations .
Check ur local muesuem
Your best bet is to contact one of the veterans organizations. The Veterans of Foreign Wars and the American Legion can help you with databases and publications to assist you in locating your fellow comrades.
To find more information on loans and other benefits that are for veterans you would need to go to the official government website for veterans and follow the links.
Contact the Veterans Administration