If you have military commercial driving experience but not one of the specialties covered by the Even Exchange Program, Utah will waive the skills test for your commercial driver licence. You still have to take the knowledge test, and you need at least two years licensed on a military vehicle similar to the class you are applying for.
Apply through the Utah Driver License Division commercial driver licence application page and ask for the military skills test waiver when you take your knowledge test.
Documentation showing at least two years licensed on a similar military vehicle, your driving record, and your discharge paperwork if you have separated.