Disabled people certainly can serve the military in non-combat positions - they undoubtedly would like all the computer programmers, scientists, designers, etc. they can recruit.

I was a computer programmer in the military. Several of the people from my unit were deployed as computer support to Saudi Arabia during Desert Storm.

Even though your AFSC may say "Computer Programmer", you may be called upon, and often are even in non-wartime to do a lot more than just write code. FWIW - I'm also M-16 qualified; not a typicla job skill for a programmer