Not sure this ID would be enough for some groups. Recently set up new Verizon account getting ready for full time and discovered they gave a discount on monthly service bill for veterans. The salesperson indicated I needed a copy of my DD 214, didn't matter that I had my retired ID card in my pocket, they needed a 214. Since my time was spread over 2 services, Army and AF, I have "several" DD214s. Didn't matter which one, just need one. So happened we were in Indiana visiting my wife's relatives and far from our home in Mississippi and didn't want to leave the office without having the discount set up when I remembered that I had also received the advice mentioned above to have form recorded at county clerk's office and had done my original one in the local office in 1979, never mind that I have 5 later ones, got the copy and viola, discount given.
Lou