List of military installations in Montana

There are at least 60 current and former U.S. military installations located in Montana. Installations listed as historical are no longer in service and may have no physical remains in the state.

• Ekalaka Mini-Mutes Radar Site, Carter County, Montana, 45°40′00″N 104°22′01″W / 45.66667°N 104.36694°W / 45.66667; -104.36694 (Ekalaka Mini-Mutes Radar Site), el. 3,205 feet (977 m)^[1]
• Fort William Henry Harrison, Lewis and Clark County, Montana, 46°37′10″N 112°06′36″W / 46.61944°N 112.11000°W / 46.61944; -112.11000 (Fort William Henry Harrison), el. 4,127 feet (1,258 m)^[2]
• Hammond Mini-Mutes Radar Site, Carter County, Montana, 45°19′10″N 104°57′14″W / 45.31944°N 104.95389°W / 45.31944; -104.95389 (Hammond Mini-Mutes Radar Site), el. 3,717 feet (1,133 m)^[3]
• Haycreek Mini-Mute Radar Site, Carter County, Montana, 45°42′00″N 104°43′59″W / 45.70000°N 104.73306°W / 45.70000; -104.73306 (Haycreek Mini-Mute Radar Site), el. 3,898 feet (1,188 m)^[4]
• Malmstrom Air Force Base, Cascade County, Montana, 47°30′19″N 111°11′01″W / 47.50528°N 111.18361°W / 47.50528; -111.18361 (Malmstrom Air Force Base), el. 3,465 feet (1,056 m)^[5]

These installations are classified as historical by the U.S. Board on Geographic Names: Historical Features – Features that no longer exist on the landscape or no longer serve the original purpose.^[6]

• Camp Baker Military Reservation, Meagher County, Montana, 46°40′43″N 111°10′19″W / 46.67861°N 111.17194°W / 46.67861; -111.17194 (Camp Baker Military Reservation), el. 4,636 feet (1,413 m)^[7]
• Camp Cooke, Fergus County, Montana, 47°43′58″N 109°40′34″W / 47.73278°N 109.67611°W / 47.73278; -109.67611 (Camp Cooke), el. 2,431 feet (741 m)^[8]
  • The first U.S. Army post built in Montana on the Judith River. Established August 1866. Disbanded June 1870. Named for General Philip St. George Cooke, the commander of the Department of the Platte at the time.^[9]
• Camp Crook, Rosebud County, Montana, 45°38′00″N 106°40′00″W / 45.63333°N 106.66667°W / 45.63333; -106.66667 (Camp Crook), el. 3,402 feet (1,037 m)^[10]
• Camp Cummings, Madison County, Montana, 45°17′38″N 111°56′43″W / 45.29389°N 111.94528°W / 45.29389; -111.94528 (Camp Cummings), el. 5,771 feet (1,759 m)^[11]
• Camp Devin, Carter County, Montana, location unknown^[12]
• Camp Lewis, Fergus County, Montana, 47°04′06″N 109°25′15″W / 47.06833°N 109.42083°W / 47.06833; -109.42083 (Camp Lewis), el. 3,927 feet (1,197 m)^[13]
• Camp Loder, Garfield County, Montana, location unknown^[14]
• Camp Merritt, Rosebud County, Montana, 45°38′00″N 106°40′00″W / 45.63333°N 106.66667°W / 45.63333; -106.66667 (Camp Merritt), el. 3,402 feet (1,037 m)^[15]
• Camp Morris, Liberty County, Montana, 48°54′30″N 111°15′08″W / 48.90833°N 111.25222°W / 48.90833; -111.25222 (Camp Morris), el. 3,944 feet (1,202 m)^[16]
• Camp Poplar River, Roosevelt County, Montana, 48°06′47″N 105°11′52″W / 48.11306°N 105.19778°W / 48.11306; -105.19778 (Camp Poplar River), el. 1,991 feet (607 m)^[17]
• Camp Porter, Dawson County, Montana, 47°09′03″N 104°41′33″W / 47.15083°N 104.69250°W / 47.15083; -104.69250 (Camp Porter), el. 2,037 feet (621 m)^[18]
• Camp Rimini, Lewis and Clark County, Montana. About 20 miles west of Helena.
• Camp Reeve, Petroleum County, Montana, 47°27′21″N 107°54′50″W / 47.45583°N 107.91389°W / 47.45583; -107.91389 (Camp Reeve), el. 2,247 feet (685 m)^[19]
• Camp Robert B Smith, Lewis and Clark County, Montana, 46°35′25″N 112°04′00″W / 46.59028°N 112.06667°W / 46.59028; -112.06667 (Camp Robert B Smith), el. 5,279 feet (1,609 m)^[20]
• Cantonment Rocky Point (historical), Fergus County, Montana, 47°36′00″N 108°26′15″W / 47.60000°N 108.43750°W / 47.60000; -108.43750 (Cantonment Rocky Point), el. 2,274 feet (693 m)^[21]
• Cut Bank Air Force Station (historical), Glacier County, Montana, 48°56′31″N 112°48′19″W / 48.94194°N 112.80528°W / 48.94194; -112.80528 (Cut Bank Air Force Station), el. 4,167 feet (1,270 m)^[22]
• Cut Bank Army Air Field (historical), Glacier County, Montana, 48°36′30″N 112°22′37″W / 48.60833°N 112.37694°W / 48.60833; -112.37694 (Cut Bank Army Air Field), el. 3,852 feet (1,174 m)^[23]
• Fort Assinniboine (historical), Hill County, Montana, 48°30′05″N 109°47′30″W / 48.50139°N 109.79167°W / 48.50139; -109.79167 (Fort Assinniboine), el. 2,671 feet (814 m)^[24]
• Fort Assinniboine Military Reservation (historical), Hill County, Montana, 48°30′05″N 109°47′30″W / 48.50139°N 109.79167°W / 48.50139; -109.79167 (Fort Assinniboine), el. 2,671 feet (814 m)^[25]
• Fort C F Smith (historical), Big Horn County, Montana, 45°18′52″N 107°54′30″W / 45.31444°N 107.90833°W / 45.31444; -107.90833 (Fort C F Smith), el. 3,268 feet (996 m)^[26]
• Fort Carroll (historical), Fergus County, Montana, 47°34′25″N 108°22′22″W / 47.57361°N 108.37278°W / 47.57361; -108.37278 (Fort Carroll), el. 2,274 feet (693 m)^[27]
• Fort Custer Military Reservation (historical), Big Horn County, Montana, 45°43′35″N 107°34′30″W / 45.72639°N 107.57500°W / 45.72639; -107.57500 (Fort Custer), el. 3,038 feet (926 m)^[28]
• Fort Elizabeth Meagher (historical), Gallatin County, Montana, 45°38′30″N 110°55′05″W / 45.64167°N 110.91806°W / 45.64167; -110.91806 (Fort Elizabeth Meagher), el. 5,249 feet (1,600 m)^[29]
• Fort Ellis (historical), Gallatin County, Montana, 45°39′16″N 110°56′35″W / 45.65444°N 110.94306°W / 45.65444; -110.94306 (Fort Ellis), el. 4,987 feet (1,520 m)^[30]
• Fort Fizzle (historical), Missoula County, Montana, 46°44′42″N 114°11′26″W / 46.74500°N 114.19056°W / 46.74500; -114.19056 (Fort Fizzle), el. 3,383 feet (1,031 m)^[31]
  • Fort Fizzle is a wooden barricade on the Lolo Trail erected by Missoula volunteers to stop the advance of Chief Joseph during the Nez Perce War in 1877. The barricade failed when the Nez Perce climbed a steep ravine behind the ridge and bypassed the soldiers. The failure to stop the Nez Perce caused the barricade to be named Fort Fizzle.^[32]
• Fort Green Clay Smith (historical), Park County, Montana, 45°43′20″N 110°27′40″W / 45.72222°N 110.46111°W / 45.72222; -110.46111 (Fort Green Clay Smith), el. 4,383 feet (1,336 m)^[33]
• Fort Howes (historical), Powder River County, Montana, 45°17′00″N 106°08′53″W / 45.28333°N 106.14806°W / 45.28333; -106.14806 (Fort Howes), el. 3,297 feet (1,005 m)^[34]
• Fort Howie (historical), Meagher County, Montana, 46°31′40″N 110°23′30″W / 46.52778°N 110.39167°W / 46.52778; -110.39167 (Fort Howie), el. 4,931 feet (1,503 m)^[35]
  • Established in 1867 near Martinsdale, Montana on the Musselshell River. Disbanded in 1867. Named for Colonel Neil Howie of the Montana Militia.^[36]
• Fort Ida Thoroughman (historical), Park County, Montana, 45°43′20″N 110°27′40″W / 45.72222°N 110.46111°W / 45.72222; -110.46111 (Fort Ida Thoroughman), el. 4,383 feet (1,336 m)^[37]
• Fort Keogh (historical), Custer County, Montana, 46°22′32″N 105°53′00″W / 46.37556°N 105.88333°W / 46.37556; -105.88333 (Fort Keogh), el. 2,372 feet (723 m)^[38]
• Fort Logan (historical), Meagher County, Montana, 46°40′43″N 111°10′19″W / 46.67861°N 111.17194°W / 46.67861; -111.17194 (Fort Logan), el. 4,636 feet (1,413 m)^[39]
• Fort Maginnis (historical), Fergus County, Montana, 47°08′30″N 109°08′02″W / 47.14167°N 109.13389°W / 47.14167; -109.13389 (Fort Maginnis), el. 4,160 feet (1,270 m)^[40]
• Fort Maginnis Military Reservation (historical), Fergus County, Montana, 47°10′00″N 109°07′32″W / 47.16667°N 109.12556°W / 47.16667; -109.12556 (Fort Maginnis), el. 4,236 feet (1,291 m)^[41]
• Fort Missoula (historical), Missoula County, Montana, 46°50′34″N 114°03′29″W / 46.84278°N 114.05806°W / 46.84278; -114.05806 (Fort Missoula), el. 3,153 feet (961 m)^[42]
• Fort Owen (historical), Ravalli County, Montana, 46°31′11″N 114°05′45″W / 46.51972°N 114.09583°W / 46.51972; -114.09583 (Fort Owen), el. 3,294 feet (1,004 m)^[43]
• Fort Shaw (historical), Cascade County, Montana, 47°30′32″N 111°49′12″W / 47.50889°N 111.82000°W / 47.50889; -111.82000 (Fort Shaw), el. 3,507 feet (1,069 m)^[44]
• Fort Skalkaho (historical), Ravalli County, Montana, 46°14′20″N 114°08′32″W / 46.23889°N 114.14222°W / 46.23889; -114.14222 (Fort Skalkaho), el. 3,599 feet (1,097 m)^[45]
• Fort Thomas F Meagher (historical), Park County, Montana, 45°42′00″N 110°31′00″W / 45.70000°N 110.51667°W / 45.70000; -110.51667 (Fort Thomas F Meagher), el. 4,442 feet (1,354 m)^[46]
• Fort William Henry Harrison (historical), Lewis and Clark County, Montana, 46°37′25″N 112°05′50″W / 46.62361°N 112.09722°W / 46.62361; -112.09722 (Fort William Henry Harrison), el. 3,963 feet (1,208 m)^[47]
• Glasgow Air Force Base (historical), Valley County, Montana, 48°24′13″N 106°31′07″W / 48.40361°N 106.51861°W / 48.40361; -106.51861 (Glasgow Air Force Base), el. 2,749 feet (838 m)^[48]
• Glasgow Army Air Field (historical), Valley County, Montana, 48°12′59″N 106°36′55″W / 48.21639°N 106.61528°W / 48.21639; -106.61528 (Glasgow Army Air Field), el. 2,297 feet (700 m)^[49]
• Havre Air Force Station (historical), Hill County, Montana, 48°52′51″N 109°56′36″W / 48.88083°N 109.94333°W / 48.88083; -109.94333 (Havre Air Force Station), el. 3,202 feet (976 m)^[50]
• Helena Barracks (historical), Lewis and Clark County, Montana, 46°37′28″N 112°04′00″W / 46.62444°N 112.06667°W / 46.62444; -112.06667 (Helena Barracks), el. 3,868 feet (1,179 m)^[51]
• Kalispell Air Force Station, Flathead County, Montana, 48°00′41″N 114°21′53″W / 48.01139°N 114.36472°W / 48.01139; -114.36472 (Kalispell AFS TM-179)
• Lewistown Air Force Station (historical), Fergus County, Montana, 47°13′03″N 109°13′20″W / 47.21750°N 109.22222°W / 47.21750; -109.22222 (Lewistown Air Force Station), el. 6,424 feet (1,958 m)^[52]
• Lewistown Army Air Field (historical), Fergus County, Montana, 47°02′37″N 109°28′35″W / 47.04361°N 109.47639°W / 47.04361; -109.47639 (Lewistown Army Air Field), el. 4,167 feet (1,270 m)^[53]
• Limestone Military Reservation (historical), Big Horn County, Montana, 45°18′15″N 107°55′40″W / 45.30417°N 107.92778°W / 45.30417; -107.92778 (Limestone Military Reservation), el. 3,379 feet (1,030 m)^[54]
• Miles City Air Force Station (historical), Custer County, Montana, 46°17′48″N 105°58′43″W / 46.29667°N 105.97861°W / 46.29667; -105.97861 (Miles City Air Force Station), el. 2,831 feet (863 m)^[55]
• National Cemetery Military Reservation (historical), Big Horn County, Montana, 45°33′55″N 107°25′54″W / 45.56528°N 107.43167°W / 45.56528; -107.43167 (National Cemetery Military Reservation), el. 3,156 feet (962 m)^[56]
• Opheim Air Force Station (historical), Valley County, Montana, 48°51′44″N 106°28′35″W / 48.86222°N 106.47639°W / 48.86222; -106.47639 (Opheim Air Force Station), el. 3,294 feet (1,004 m)^[57]
• Powder River Supply Depot (historical), Prairie County, Montana, 46°44′26″N 105°26′03″W / 46.74056°N 105.43417°W / 46.74056; -105.43417 (Powder River Supply Depot), el. 2,192 feet (668 m)^[58]
  • A U.S. Army steamboat landing established at the mouth of Powder River in 1876. Abandoned in 1882 when the Northern Pacific Railway reached the Powder River.^[59]
• Powder River Telegraph Station (historical), Powder River County, Montana, 45°45′32″N 105°6′55″W / 45.75889°N 105.11528°W / 45.75889; -105.11528 (Powder River Telegraph Station), el. 2,828 feet (862 m)
  • A U.S. Army telegraph repair station established on the Black Hills-Fort Keogh Telegraph route in 1878. Abandoned in 1883.
• Stanley's Stockade (historical), Dawson County, Montana, 46°55′36″N 104°52′10″W / 46.92667°N 104.86944°W / 46.92667; -104.86944 (Stanleys Stockade), el. 2,133 feet (650 m)^[60]
  • A U.S. Army advance supply depot established near present-day Glendive, Montana on the Yellowstone River in July 1873. Used by General Alfred Terry as his headquarters during the 1876 Sioux campaign.^[61]
• Yaak Air Force Station (historical), Lincoln County, Montana, 48°51′43″N 115°43′20″W / 48.86194°N 115.72222°W / 48.86194; -115.72222 (Yaak Air Force Station), el. 4,970 feet (1,510 m)^[62]

• Frazer, Robert W. (1965). Forts of the West-Military Forts and Presidios and Posts commonly called Forts West of the Mississippi River to 1898. Norman, Oklahoma: University of Oklahoma Press.
• Hart, Herbert M. (1963). Old Forts of the Northwest. Seattle, Washington: Superior Publishing Company.
• Grant, Bruce (1965), American Forts-Yesterday and Today, New York: E.P. Dutton and Co. Inc.

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