As a veteran, how can I get my wife an ID for military discounts and/or entering the Ft Bliss Commissary?

SPC Henry Chavez Here is the link with information about spousal ID.

https://www.military.com/spouse/military-life/military-resources/military-dependent-id-cards.html#:~:text=Yes%2C%20if%20they%20meet%20the%20qualifications.%20Spouses%20of,Care%20can%20also%20be%20issued%20an%20ID%20card.

I recommend using the link that Theodore Hallock provided but warn there are eligibility requirements. Good Luck.