You need to link your Gamertags, PSN IDs and old EA master accounts to your current EA account for the Veteran's Program to have the most information possible to find your Battlefield games. You can do the steps below to link your accounts.
Step 1: Link your Xbox Gamertags, PSN IDs and old master accounts to your main EA account that you will use for the Veteran Program.
Step 2: After linking your accounts, login to the Veteran's site with your EA account to auto-check for your games. If a game isn't found, you may be able to manually enter the details to add it.
Veteran Rank: You will receive Veteran rewards in select Battlefield games if you have a Veteran rank of 1 or higher. You need two full Battlefield games to be rank 1.