The National Archives.

You can google ” national archives ” and get their web page.

On the front page, in the center,they have a link for most requested records.

You will see a link, to request military records.

You will have to download a form and either fax it back or mail it back.

The more information you provide , the faster they find the records.

IE: SS number, full name, enlistment date, units served with, dates in the military, service number of older veterans.