Since 1993 portions of the Glorieta Pass Battlefield have become a unit of the National Park Service. The Glorieta Pass unit (Pigeon's Ranch) comprises roughly 20% of the total battlefield. The remaining 80% is in private ownership. Glorieta Pass Battlefield is managed by Pecos National Historical Park and supported by the Glorieta Battlefield Coalition, a non-profit citizens' organization. The Civil War Trust (a division of the American Battlefield Trust) and its partners have acquired and preserved of the Glorieta Pass battlefield.