You can have your service shown on your Indiana driver license or ID card: "V" for veterans, "AM" for active duty service members, and "VS" for surviving spouses. There is no charge if you add it when you get a new card or renew, but the usual fees apply if you add it to an unexpired card outside the normal renewal period.
Visit an Indiana BMV branch and ask for the indicator when you apply for or renew your license or ID card.
For the veteran indicator, your DD214 or another Department of Defense document showing an other than dishonorable discharge. For the active duty indicator, your Common Access Card. For the surviving spouse indicator, the veteran’s discharge document plus your marriage certificate and the veteran’s death certificate.