Citizenship granted pursuant to this section may be revoked in accordance with section
1451 of this title if the person is separated from the Armed Forces under other than honorable conditions before the person has served honorably for a period or periods aggregating five years. Such ground for revocation shall be in addition to any other provided by law, including the grounds described in section
1451 of this title. The fact that the naturalized person was separated from the service under other than honorable conditions shall be proved by a duly authenticated certification from the executive department under which the person was serving at the time of separation. Any period or periods of service shall be proved by duly authenticated copies of the records of the executive departments having custody of the records of such service.