Membership in the Surface Warrior Hall of Fame is open to any Service Member or Department of Defense Civilian with a previous assignment to the Military Surface Deployment and Distribution Command, whether assigned at SDDC headquarters or its subordinate organizations. Persons may be nominated regardless of their rank or grade. Nominees are only eligible for induction if their most recent period of service in SDDC ended four or more years prior to the opening of the nomination period. DoD contractor employees are not eligible for nomination for contributions made in their contractor employee capacity. This does not prevent the nomination of former Service Members or DoD civilian employees who are employed by a DoD contractor after leaving federal service; such a nomination must be based on contributions made to SDDC during the nominee's federal service.