For all US military active and retired and dependents.
I had to get a new one 5 years ago when I turned 65. The new one had changed the ID# from SSN to a unique DoD ID#. Something I had not had on my ID since early 72 when they changed from my original service # to SSN.
It will be interesting to see what this one looks like, but, no hurry, especially with the scamdemic mask mania still going on.