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List of conflicts in the United States

This is a list of conflicts in the United States. Conflicts are arranged chronologically from the late modern period to contemporary history. This list includes (but is not limited to) the following: Indian wars, skirmishes, wars of independence, liberation wars, colonial wars, undeclared wars, proxy wars, territorial disputes, and world wars. Also listed might be any battle that was itself only part of an operation of a campaign of a theater of a war. There may also be periods of violent civil unrest listed, such as: riots, shootouts, spree killings, massacres, terrorist attacks, and civil wars. The list might also contain episodes of: human sacrifice, mass suicide, genocides, and other related items that have occurred within the geographical area (including overseas territories) of what is today known as, the "United States of America".

Late modern period

18th century

1775–1783 American Revolutionary War
- 1775
  - Battles of Lexington and Concord
  - Siege of Boston
  - Battle of Ticonderoga
  - Battle off Fairhaven
  - Battle of Machias
  - Battle of Bunker Hill
  - Battle of Great Bridge
  - Battle of Great Cane Break
- 1776
  - Battle of Moore's Creek Bridge
  - Battle of Long Island
  - Battle of Harlem Heights
  - Battle of Mamaroneck
  - Battle of White Plains
  - Battle of Fort Washington
  - Battle of Trenton
- 1777
  - Battle of Princeton
  - Battle of Ridgefield
  - Battle of Gwynn's Island
  - Battle of Oriskany
  - Battle of Machias
  - Battle of Bennington
  - Battle of Setauket
  - Battle of Brandywine Creek
  - Battle of Saratoga
  - Capture of Philadelphia
  - Battle of Germantown
- 1778
  - Battle of Monmouth
  - Battle of Alligator Creek Bridge
  - Capture of Savannah
- 1779
  - Battle of Baton Rouge
  - Battle of Van Creek
  - Battle of Kettle Creek
  - Battle of Brier Creek
  - Battle of Vincennes
  - Battle of Stono Ferry
  - Battle of Paulus Hook
- 1780
  - Battle of Young's House
  - Siege of Charleston
  - Battle of Monck's Corner
  - Battle of Lenud's Ferry
  - Battle of Connecticut Farms
  - Battle of Mobley's Meeting House
  - Battle of Camden
  - Battle of Musgrove Mill
  - Battle of Wahab's Plantation
  - Battle of King's Mountain
  - Battle of Tearcoat Swamp
  - Battle of Fishdam Ford
  - Battle of Blackstock's Farm
- 1781
  - Battle of Cowpens
  - Battle of Cowan's Ford
  - Battle of Guilford Court House
  - Siege of Ninety Six
  - Battle of Groton Heights
  - Siege of Yorktown
1777–1794 Cherokee–American wars
1783–1788 Second Pennamite War between settlers from Connecticut and Pennsylvania in Wyoming Valley of Pennsylvania
1785–1795 Northwest Indian War
1786–1787 Shays' Rebellion
1791–1794 Whiskey Rebellion
1798–1800 Quasi-War, an undeclared naval war with France

19th century

1804 Battle of Sitka Russian forces defeat the Tlingit in the last major armed conflict between Europeans and Alaska Natives.
1811 Tecumseh's War
- Battle of Tippecanoe
1812–1815 War of 1812
- 1812
  - Siege of Fort of Mackinac
  - Battle of River Canard
  - First Battle of Sackett's Harbor
  - Battle of Brownstown
  - Battle of Maguaga
  - Battle of Fort Dearborn
  - Siege of Detroit
  - Siege of Fort Harrison
  - Siege of Fort Wayne
  - Battle of Wild Cat Creek
  - Battle of the Mississinewa
- 1813
  - Battle of Frenchtown
  - Raid on Elizabethtown
  - Battle of Ogdensburg
  - Siege of Fort Meigs
  - Battle of Sackett's Harbor
  - Battle of Craney Island
  - Battle of Fort Stephenson
  - Battle of St. Michaels
  - Battle of Bladensburg
  - Battle of Lake Erie
  - Capture of Fort Niagara
- 1813
  - Battle of Tipton's Island
  - Battle of Africa Point
  - Raid on Havre de Grace
  - Battle of Craney Island
  - Battle of Fort Stephenson
- 1814
  - Battle of Longwoods
  - Raid on Fort Oswego
  - Siege of Prairie du Chien
  - Battle of Big Sandy Creek
  - Battle of Rock Island Rapids
  - Battle of Mackinac Island
  - Battle of Bladensburg
  - Burning of Washington
  - Raid on Alexandria
  - Battle of Caulk's Field
  - Battle of North Point
  - Battle of Lake Champlain
  - Battle of Baltimore
  - Battle of Pensacola (1812)
- 1815
  - Battle of New Orleans
  - Battle of Fort Peter
  - Battle of the Sink Hole
  - Battle of Fort Bowyer
1813–1814 Creek War
1817–1818 First Seminole War
1823 Arikara War
1827 Winnebago War
1831 Nat Turner's Rebellion
1832 Black Hawk War
1833 Cutthroat Gap massacre
1835–1842 Second Seminole War
1835–1836 Toledo War (bloodless)
1835–1836 Texas Revolution

October 2, 1835 Battle of Gonzales
October 10, 1835 Battle of Goliad
November 4, 1835 Battle of Lipantitlán
October 28, 1835 Battle of Concepción
November 26, 1835 Grass Fight
October 12 – December 11, 1835 Siege of Béxar
February 27, 1836 Battle of San Patricio
March 2, 1836 Battle of Agua Dulce
February 23 – March 6, 1836 Battle of the Alamo
March 12–15, 1836 Battle of Refugio
March 19–20, 1836 Battle of Coleto
April 21, 1836 Battle of San Jacinto

1838 Missouri Mormon War
1838–1839 Aroostook War
1839 Honey War (bloodless)
1841–1842 Dorr War
1845 Milwaukee Bridge War
1846–1848 Mexican–American War
- 1846
  - Battle of Palo Alto
  - Battle of Resaca de la Palma
  - Battle of Olómpali
  - Occupation of Santa Fe
  - Battle of Monterey
  - Siege of Los Angeles
  - Battle of Chino
  - Battle of Natividad
  - Battle of San Pasqual
  - Battle of El Brazito
- 1847
  - Battle of Rio San Gabriel
  - Battle of La Mesa
  - Taos Revolt
1848–1855 Cayuse War
1849–1855 Jicarilla War
1850–1853 Yuma War
1855-1856 Rogue River Wars
- 1855 Battle of Hungry Hill
1854–1858 Bleeding Kansas
- 1856 Battle of Black Jack
- 1856 Battle of Fort Titus
- 1856 Battle of Osawatomie
1855–1858 Third Seminole War
1856 Tule River War
1857–1858 Utah War
1858–1864 Bald Hills War
1859 Pig War
1860 Pyramid Lake War
1861–1865 American Civil War
- 1861
  - Battle of Fort Sumter
  - Battle of Philippi
  - Battle of Big Bethel
  - Battle of Cole Camp
  - First Battle of Mesilla
  - Battle of Rich Mountain
  - First Battle of Bull Run
  - Battle of Wilson's Creek
  - Battle of Dry Wood Creek
  - Battle of Barbourville
  - Battle of Ball's Bluff
  - Battle of Rowlett's Station
  - Battle of Mount Zion Church
- 1862
  - Battle of Roan's Tan Yard
  - Battle of Mill Springs
  - Battle of Roanoke Island
  - Battle of Fort Donelson
  - Battle of Pea Ridge
  - Battle of Hampton Roads
  - Battle of Shiloh
  - Battle of Island Number 10
  - Battle of Valverde
  - Battle of Glorieta Pass
  - Battle of Albuquerque
  - Battle of Peralta
  - Battle of Fair Oaks
  - First Battle of Memphis
  - Battle of Cross Keys
  - Battle of Port Republic
  - Seven Days' Battles
  - Battle of Savage's Station
  - Battle of Baton Rouge
  - Battle of Cedar Mountain
  - Second Battle of Bull Run
  - Battle of Antietam
  - Battle of Coffeeville
  - Battle of Fredericksburg
  - Battle of Kinston
  - Battle of Chickasaw Bayou
  - Battle of Stones River
- 1863
  - Battle of Hartville
  - Battle of Deserted House
  - Skirmish at Threkeld's Ferry
  - Battle of Kelly's Ford
  - Battle of Vaught's Hill
  - Battle of Brentwood
  - Battle of Somerset
  - Battle of Newton's Station
  - Battle of Chancellorsville
  - Battle of Port Gibson
  - Siege of Vicksburg
  - Battle of Portland Harbor
  - Battle of Gettysburg
  - Battle of Helena
  - Battle of Honey Springs
  - Battle of Buffington Island
  - Battle of Chickamauga
  - Battle of Chattanooga
  - Battle of Knoxville
- 1864
  - Battle of Loudoun Heights
  - Battle of Dandridge
  - Battle of Morton's Ford
  - Battle of Olustee
  - Battle of Okolona
  - Battle of Rio Hill
  - Battle of Walkerton
  - Battle of Laredo
  - Battle of Paducah
  - Battle of the Wilderness
  - Battle of Port Walthall Junction
  - Siege of Atlanta
  - Battle of Spotsylvania
  - Battle of Resaca
  - Battle of North Anna
  - Battle of Wilson's Wharf
  - Battle of Cold Harbor
  - Battle of Marietta
  - Battle of Trevilian Station
  - Siege of Petersburg
  - Battle of Kennesaw Mountain
  - Battle of Peachtree Creek
  - Battle of Atlanta
  - Battle of the Crater
  - Battle of Mobile Bay
  - Battle of Utoy Creek
  - Battle of Jonesborough
  - Battle of Vernon
  - Battle of Griswoldville
  - Battle of Buck Head Creek
  - Battle of Franklin II
  - Battle of Honey Hill
  - Battle of Nashville
  - Battle of Anthony's Hill
- 1865
  - Battle of Dove Creek
  - Battle of Natural Bridge
  - Battle of Bentonville
  - Battle of Lewis's Farm
  - Battle of Dinwiddie Court House
  - Battle of Five Forks
  - Third Battle of Petersburg
  - Battle of Namozine Church
  - Battle of Amelia Springs
  - Battle of Rice's Station
  - Battle of Cumberland Church
  - Battle of Appomattox Court House
1862 Dakota War of 1862
1863–1865 Colorado War
- 1864 Sand Creek Massacre
1865–1866 Fenian Raids
1866–1868 Red Cloud's War
1867–1875 Comanche War
1872–1873 Modoc War
1873–1888 Colfax County War
1874 Battle of Liberty Palace
1876–1877 Black Hills War
- 1876
  - Battle of Powder River
  - Battle of the Rosebud
  - Battle of the Little Bighorn
- 1877
  - Battle of Wolf Mountain
  - Battle of Little Muddy Creek
1877 Nez Percé War
1877 Great Railroad Strike of 1877
1878 Lincoln County War
1878–1900 Colorado Range War
1881 Gunfight at the O.K. Corral
1882 Pleasant Valley War
1884 Cincinnati Courthouse riots
1885 Rock Springs Massacre
1887 Thibodaux massacre
1887-1894 Hatfield-McCoy Feud
1889–1893 Johnson County War
1890–1891 Ghost Dance War
- 1890
  - Wounded Knee Massacre
1891–1892 Coal Creek War
1891–1893 Garza Revolution
1892 Homestead Strike
1894 Pullman Strike
1897 Lattimer massacre
1898 Spanish–American War
- 1898 Battle of Yauco
- 1898 Battle of Guayama
- 1898 Battle of Coamo

Contemporary history

20th Century

This covers conflicts and terrorist attacks in the 1900s that occurred within the modern territory of the United States of America. This also includes attacks upon the United States from Eurasian powers.

1900–1950

July 6–10, 1903 Evansville race riot
April – July, 1905 Chicago teamsters' strike
June 1, 1906 Cananea strike
September 22–24 Atlanta Massacre of 1906
1910–1919 Border War
April 20, 1914 Ludlow Massacre
1914–1918 World War I
- April 21, 1914 Ypiranga incident
- July 22, 1916 Preparedness Day Bombing
- July 30, 1916 2:08:00 AM (AST; GMT−4) Black Tom explosion
- January 11, 1917 Kingsland Explosion
- August 2–3, 1917 Green Corn Rebellion
- July 21, 1918 Attack on Orleans
- August 7, 1918 Battle of Ambos Nogales
1919 Red Summer
- July 19–24 Washington D.C. race riot
- July 27 – August 3 Chicago race riot
- August 30–31 Knoxville riot
September 16, 1920 Wall Street bombing
November 2–3, 1920 Ocoee massacre
May 31 – June 1, 1921 Tulsa race riot
1912 – 1921 West Virginia coal wars
- September 10–21, 1921 Battle of Blair Mountain
December 14–15, 1922 Perry race riot
January 1–7, 1923 Rosewood massacre
March 20–23, 1923 Posey War
November 21, 1927 Columbine Mine massacre
1931 July Red River Bridge War
1931 July 28 Bonus Army protest
1937 March 21 Ponce massacre
1939 – 1945 World War II

October 16, 1940 – May 21, 1941 Machita Incident
December 7, 1941 Attack on Pearl Harbor
February 23, 1942 Bombardment of Ellwood
February 24–25, 1942 Battle of Los Angeles
June 3, 1942 – August 15, 1943 Battle of the Aleutian Islands
June 21, 1942 Bombardment of Fort Stevens
July 27, 1942 Lordsburg Killings
September 9–29, 1942 Lookout Air Raids
May 30, 1943 Zoot Suit Riots
August 14, 1944 Fort Lawton Riot
March 12, 1945 Santa Fe Riot
April 16, – September 17, 1945 Project Hula
May 5–6, 1945 Battle of Point Judith
July 8, 1945 Midnight Massacre

1933 Business Plot
May 2–4, 1946 Battle of Alcatraz
August 1–3, 1946 Battle of Athens

1950–2000

October 30, 1950 – March 1, 1954 Puerto Rican Nationalist Party insurgency
July 24–26, 1964 Rochester race riot
August 11–17, 1965 Watts Rebellion
July 12–15, 1966 Chicago West Side riots
July 18–23, 1966 Hough riots
June 5, 1967 Tierra Amarilla courthouse raid
Summer of 1967 Long, hot summer of 1967
- June 26 – July 1 Buffalo riot
- July 12–17 Newark riots
- July 14–16 Plainfield riots
- July 23–25 Toledo riot
- July 23–27 Detroit riot
- July 31 – August 3 Milwaukee riot
April 4 – May 27, 1968 King-assassination riots
- April 4–5 New York City
- April 4–8 Washington, D.C.
- April 5–7 Chicago
- April 5–11 Pittsburgh
- April 6–14 Baltimore
- April 9 Kansas City
- April 9–10 Wilmington
August 7–8, 1968 Miami riots
August 8-9 1969 Tate–LaBianca murders
August 23–28 1968 Democratic National Convention protests
June 28 – July 3, 1969 Stonewall riots
May 4, 1970 Kent State shootings
May 11–12, 1970 Augusta riot
August 24–27 1970 Memorial Park riot
September 9, 1971 Attica Prison riot
February 27 - May 8 1978 Wounded Knee Occupation
February 2–3, 1980 New Mexico State Penitentiary riot
May 17–20, 1980 Miami riots
May 13, 1985 Philadelphia MOVE bombing
January 11–13, 1983 Shannon Street massacre
April 29, 1992 Los Angeles riots
February 26, 1993 World Trade Center bombing
August 21–31, 1992 Ruby Ridge standoff
February 28 – April 19, 1993 Waco siege
January 6 – 7, 1995 Bojinka plot
April 19, 1995 Oklahoma City bombing
February 28, 1997 North Hollywood shootout
March 19 – 20, 1997 Heaven's Gate mass suicide
November 30 - December 3, 1999 Seattle WTO Protests

21st century

This includes domestic conflicts and terrorist attacks that took place within the United States. Note that actions of terrorism and domestic conflict are distinguished from one another.

2001–2021 War on Terror
- September 11, 2001, September 11 attacks
- May 8, 2007 Fort Dix attack plot
- November 5, 2009 Fort Hood shooting
- April 15, 2013 Boston Marathon bombing
- April 2, 2014 Fort Hood shootings
- December 2, 2015 San Bernardino attack
- June 12, 2016 Orlando nightclub shooting
- October 31, 2017 New York City truck attack
- December 6, 2019 Naval Air Station Pensacola shooting
- January 15, 2022 Colleyville synagogue hostage crisis

February 3–12, 2013, Christopher Dorner shootings and manhunt
April 5 – May 2014 Bundy standoff
August 9 – December 2, 2014 Ferguson unrest
April 18 – May 3, 2015, Baltimore protests
June 17, 2015 Charleston church shooting
January 1 – February 16, 2016 occupation of the Malheur National Wildlife Refuge
April 2016 – February 2017 Dakota Access Pipeline Protests
June 26, 2016 Sacramento riot
February – September 2017 Berkeley riots
August 11–12, 2017 Unite the Right rally
October 1, 2017 Las Vegas shooting
November 5, 2017 Sutherland Springs church shooting
October 27, 2018 Pittsburgh synagogue shooting
August 3, 2019 El Paso shooting
September 17–21, 2019, Storm Area 51
May 25, 2020–2023 United States racial unrest
May 26, 2020 – June 20, 2021, George Floyd Square occupied protest
August 26–31, 2020 Minneapolis false rumors riot
January 6, 2021, United States Capitol attack
October 25, 2023, Lewiston shootings
January 11, 2024-present, Standoff at Eagle Pass
October 2023-present, Israel–Hamas war protests in the United States