Question: During what was did William W. Morris serve in charge of the place that would go on to become a designated National Park in 1925, and a "National Monument and Historic Shrine" in 1939?
Sentence (from "William W. Morris"): He served as a colonel and brevet brigadier general in the Regular Army (United States), with Union Army service during the American Civil War (1861–1865).
Relevant evidence: Yes