Question: My Own America was composed by a writer who held what Army post?

Context paragraphs:
Fort Rucker: Fort Rucker is a U.S. Army post located mostly in Dale County, Alabama, United States.  It was named for a Civil War officer, Confederate General Edmund Rucker.  The post is the primary flight training base for Army Aviation and is home to the United States Army Aviation Center of Excellence (USAACE) and the United States Army Aviation Museum.  Small sections of the post also lie in Coffee, Geneva, and Houston counties.  Part of the Dale County section of the base is a census-designated place; its population was 4,636 at the 2010 census.

Fort Selden: Fort Selden was a United States Army post, occupying the area in what is now Radium Springs, New Mexico.  The site was long a campground along the El Camino Real de Tierra Adentro.  I was the site of a Confederate Army camp in 1861.  The U. S. Army established Fort Selden in 1865 for the purpose of protecting westward settlers from Native American raids, the post fell into disrepair after the American Civil War.  It was ultimately abandoned in 1891, due in large part to the decision to expand Fort Bliss and the lack of any expenditures for repair of the facility.

Frank C. Huston: Frank C. Huston (September 12, 1871-October 14, 1959) was an Army Chaplin, songwriter, and music publisher.

Fort Lesley J. McNair: Fort Lesley J. McNair is a United States Army post located on the tip of Greenleaf Point, the peninsula that lies at the confluence of the Potomac River and the Anacostia River in Washington, D.C. To the peninsula's west is the Washington Channel, while the Anacostia River is on its south side.  Originally named Washington Arsenal, the fort has been an army post for more than 200 years, third in length of service, after the United States Military Academy at West Point and the Carlisle Barracks.

Fort Ord: Fort Ord is a former United States Army post on Monterey Bay of the Pacific Ocean coast in California, which closed in 1994.  Most of the fort's land now makes up the Fort Ord National Monument, managed by the U.S. Bureau of Land Management as part of the National Landscape Conservation System.  Before construction and official designation as a fort in 1940, the land was used as a maneuver area and field-artillery target range during 1917.  Fort Ord was considered one of the most attractive locations of any U.S. Army post, because of its proximity to the beach and California weather.  The 7th Infantry Division was its main garrison for many years.  When Fort Ord was converted to civilian use, space was set aside for the first nature reserve in the United States created for conservation of an insect, the endangered Smith's blue butterfly.  Additional endangered species are found on Fort Ord including Contra Costa goldfields and the threatened California Tiger Salamander.

Fort Bliss: Fort Bliss is a United States Army post in the U.S. states of New Mexico and Texas, with its headquarters located in El Paso, Texas.  Named in honor of LTC William Bliss (1815-1853), a mathematical genius who was the son-in-law of President Zachary Taylor, Ft. Bliss has an area of about 1700 sqmi ; it is the largest installation in FORSCOM (United States Army Forces Command) and second-largest in the Army overall (the largest being the adjacent White Sands Missile Range).  The portion of the post located in El Paso County, Texas, is a census-designated place with a population of 8,591 as of the time of the 2010 census.  Fort Bliss provides the largest contiguous tract (1500 sqmi ) of restricted airspace in the Continental United States, used for missile and artillery training and testing, and at 992,000 acres boasts the largest maneuver area (ahead of the National Training Center, which has 642,000 acres).

Fort Mason: Fort Mason, once known as San Francisco Port of Embarkation, US Army, in San Francisco, California, is a former United States Army post located in the northern Marina District, alongside San Francisco Bay.  Fort Mason served as an Army post for more than 100 years, initially as a coastal defense site and subsequently as a military port facility.  During World War II, it was the principal port for the Pacific campaign.

Fort Oglethorpe (Fort Oglethorpe, Georgia): Fort Oglethorpe was a United States Army post in the US state of Georgia.  It was established in a 1902 regulation, and received its first contingent in 1904.  It served largely as a cavalry post for the 6th Cavalry.  During World War I Fort Oglethorpe was home to 4,000 German Prisoners of War and civilian detainees.  During World War I and World War II, it served as an induction and processing center.  During World War II, it was a major training center for the Women's Army Corps.  The post was declared surplus after World War II and sold.  The majority of the old post formed the nucleus for the present community of Fort Oglethorpe, Georgia.

Sheridan Reserve Center: The Philip H. Sheridan Reserve Center is the former Fort Sheridan now in Lake Forest, Highwood, and Highland Park in Lake County, Illinois, United States.  It was originally established as a United States Army Post named after Civil War Cavalry General Philip Sheridan, to honor his services to Chicago.  When the main fort was officially closed by the Army on May 3, 1993, the majority of the property was sold by the Department of Defense to commercial land developers.  Most of the original housing structures were then refurbished and resold as a residential community.  Other buildings were given to cultural organizations like Midwest Young Artists, the largest youth music program in the Midwest.  Approximately 90 acres of the southern end of the original post were retained by the Army; there the Army now operates the Sheridan Reserve Center complex.

My Own America: My Own America is a World War II song for voice and piano written and composed by Frank C. Huston.  The song was self-published in 1940 by F.C. Huston in Indianapolis, IN.

Supporting paragraphs: My Own America Frank C. Huston
Answer: Chaplin