Women have proven themselves to be valuable military assets in both combat and support roles. However, that adult women are not required to register for Selective Service alongside men means they receive preferential, rather than equal, military consideration.
With women included in the Selective Service registry, were the draft to be reinstated in a time of military crisis the increased human resources would mean more qualified personnel for combat and support roles and more flexibility to deny service to those who are less physically or psychologically fit and who might therefore pose a threat to others (including soldiers).
Women are equally capable pilots, leaders, warriors, and administrative officials, and their service would be invaluable to the nation's defense.