Mo. Rev. Stat. § 301.3030: No fee or limit on military special license plates for qualified persons.

1. Notwithstanding any provision of law to the contrary, no special license plates involving military actions or personnel shall require a special fee for issuance or personalization of one set of such plates issued to each qualified applicant. Additional sets of special license plates issued to the qualified applicant may be subject to fees for special license plate issuance or personalization as otherwise required by law.

2. Any special license plates involving military actions or personnel that are authorized after August 28, 2006, shall not limit the number of license plates any person qualified for such special license plate may obtain so long as each set of license plates issued is issued for vehicles owned solely or jointly by the qualified applicant.