To become a member of the Royal Gorge Marine Corps League Detachment 1318, interested individuals should first review the eligibility requirements to ensure they meet the criteria for membership. The next step is to complete a membership application.

The completed application, along with any required documentation (such as proof of service for veterans), and the membership dues should then be submitted to the Detachment for review. Prospective members may also be invited to attend a meeting or event to learn more about the Detachment's activities and meet current members. Upon approval of the application, new members will be officially welcomed into the Detachment and can begin participating in its programs and events.