This is an incomplete list of all military confrontations that have occurred within the boundaries of the modern U.S. state of Missouri since European contact.

Name Date Location War Strength Casualties Belligerents Victor
St. Louis May 25, 1780 St. Louis American Revolutionary War Spain-320, Great Britain-~1,500 108 Spain vs. Great Britain & Indian tribes Spanish victory
Sink Hole May 24, 1815 Lincoln County War of 1812 ? 8 Sauk vs. United States United States victory
Battle Creek July 1829 Schuyler County American Indian Wars ? ? Iowa vs. American settlers United States victory
Gallatin August 6, 1838 Gallatin Missouri Mormon War Mormon-?, Missouri Citizens-200 ? Latter-Day Saints vs. Missouri citizens Citizens victory
Crooked River October 28, 1838 Crooked River Missouri Mormon War Mormon-?, Missouri State Militia-1 division 4 Latter-Day Saints vs. Missouri State Militia Latter-Day Saints victory
Haun's Mill October 30, 1838 Caldwell County Missouri Mormon War Mormon-?, Missouri State Militia-240 21 Latter-Day Saints vs. Missouri State Militia Missouri victory
1st Boonville June 17, 1861 Boonville American Civil War Union-1,700, Missouri State Guard-~1,500 10 KIA, 17 WIA, 80 POW United States vs. Missouri (Confederate) Union victory
Cole Camp June 19, 1861 Benton County American Civil War Benton County Home Guard-600, Missouri State Guard-300 43 KIA, 85 WIA, 25 POW United States vs. Missouri (Confederate) Confederate victory
Carthage July 5, 1861 Near Carthage American Civil War Union-1,100, Missouri State Guard-6,000 244 United States vs. Missouri (Confederate) Confederate victory
Dug Springs August 2, 1861 Near Clever American Civil War ? 48 KIA, 74 WIA United States vs. Missouri (Confederate) Union victory
Athens August 5, 1861 Clark County American Civil War Home Guard-333-500, Missouri State Guard-~2,000 men plus 3 cannon 3 KIA, 20 WIA, 31 KIA & WIA United States vs. Missouri (Confederate) Union victory
Wilson's Creek August 10, 1861 Christian and Greene counties American Civil War Union-5,430, Missouri State Guard-12,120 535 KIA, 1808 WIA, 196 MIA United States vs. Missouri (Confederate) Confederate victory
Charleston August 19, 1861 Charleston American Civil War Union-250, Confederate-500 ? United States vs. Confederate States Union victory
Dry Wood Creek September 2, 1861 Vernon County American Civil War Union-600, Missouri State Guard-? 18 KIA, 16 WIA United States vs. Missouri (Confederate) Confederate victory
2nd Boonville September 13, 1861 Boonville American Civil War Boonville Home Guardsmen-140, Missouri State Guard-800 United States vs. Missouri (Confederate) Union victory
1st Lexington September 13–20, 1861 Lexington American Civil War Lexington Garrison-3,500 Missouri State Guard-15,000 800 KIA, 1,000 POW United States vs. Missouri (Confederate) Confederate victory
Blue Mills Landing September 17, 1861 Clay County American Civil War Union-600, Missouri State Guard-3,500 126 United States vs. Missouri (Confederate) Confederate victory
Fredericktown October 21, 1861 Madison County American Civil War Union-2,500, Confederacy-? 25 KIA, 40 WIA, 80 POW United States vs. Confederate States Union victory
1st Springfield October 25, 1861 Springfield American Civil War Union-326 Confederacy-1,500 218 United States vs. Confederate States Union victory
Belmont November 7, 1861 Mississippi County American Civil War Union-3,114, Confederacy-~ 5,000 225 KIA, 727 WIA, 221 POW/MIA United States vs. Confederate States Indecisive
Blackwater Creek December 19, 1861 Johnson County American Civil War Union-4,000, Confederacy-750 694 United States vs. Confederate States Union victory
Mount Zion Church December 28, 1861 Boone County American Civil War Union-440, Confederacy-~ 900 27 KIA, 213 WIA, 64 POW United States vs. Confederate States Union victory
Roan's Tan Yard January 8, 1862 Randolph County American Civil War Union-450, Confederacy-800 46 KIA, 99 WIA, 28 POW United States vs. Confederate States Union victory
New Madrid February 28, 1862 – April 8, 1862 New Madrid American Civil War Union-6 gunboats 11 mortar rafts, Confederacy-~ 7,000 53 KIA, 50 WIA, 5 MIA, 7,000 POW United States vs. Confederate States Union victory
Moore's Mill July 28, 1862 Callaway County American Civil War Union-733, Confederacy-260-350 13 KIA, 55 WIA, 202 KIA/WIA United States vs. Confederate States Union victory
Cravensville August 5, 1862 Daviess County American Civil War Union-35, Confederacy-85 Union 5 wounded Confederates 8 killed 10 wounded United States vs. Confederate States Union victory
Kirksville August 6, 1862 Adair County American Civil War Union-1,000, Confederacy-2,500 456 United States vs. Confederate States Union victory
Compton's Ferry August 11, 1862 Livingston County American Civil War Union-?, Confederacy-~ 1,500 ? United States vs. Confederate States Union victory
Independence August 11, 1862 Independence American Civil War Union-344, Confederacy-~800 344 United States vs. Confederate States Confederate victory
Yellow Creek August 13, 1862 Chariton County American Civil War Union-~700, Confederacy-Unknown 2 WIA, Confederate-? United States vs. Confederate States Union victory
Lone Jack August 15–16, 1862 Jackson County American Civil War Union-800, Confederacy-1,500-3,000 270 United States vs. Confederate States Confederate victory
1st Newtonia September 30, 1862 Newtonia American Civil War Union-1,500 Confederacy-1 brigade 345 United States vs. Confederate States Confederate victory
Island Mound October 29, 1862 Bates County American Civil War Union-250, Confederacy-350 19 United States vs. Confederate States Union victory
Clark's Mill November 7, 1862 Douglas County American Civil War Union-113, Confederacy-1,000 113 United States vs. Confederate States Confederate victory
2nd Springfield January 8, 1863 Springfield American Civil War Union-2,099, Confederacy-1,870 521 United States vs. Confederate States Union victory
Hartville January 9–11, 1863 Wright County American Civil War Union-750, Confederacy- ? 19 KIA, 160 WIA, 10 MIA/POW United States vs. Confederate States Indecisive
Cape Girardeau April 26, 1863 Cape Girardeau County American Civil War Union-4,000, Confederacy- 5,000 337 United States vs. Confederate States Union victory
Chalk Bluff May 1–2, 1863 Dunklin County American Civil War Union-120, Confederacy- 210 53 KIA, 104 WIA, 120 MIA, 53 POW United States vs. Confederate States Confederate pyrrhic victory
3rd Boonville October 11, 1863 Boonville American Civil War ? ? United States vs. Confederate States Union victory
Camden Point July 13, 1864 Camden Point American Civil War Union-1,000, Confederacy- 300 6 KIA, 25 WIA United States vs. Confederate States Union victory
Fort Davidson September 27, 1864 Iron County American Civil War Union-1,500, Confederacy- 12,000 1,684 United States vs. Confederate States Union victory
4th Boonville October 11, 1864 Boonville American Civil War ? ? United States vs. Missouri (Confederate) Confederate victory
Glasgow October 15, 1864 Glasgow American Civil War Union-800, Confederacy-1,800 450 United States vs. Confederate States Confederate victory
Sedalia October 15, 1864 Sedalia American Civil War Union-~800, Confederacy-~1,200 1 United States vs. Confederate States Confederate victory
2nd Lexington October 19, 1864 Lexington American Civil War Union-2,000 Confederacy-8,500 ? United States vs. Confederate States Confederate victory
Little Blue October 21, 1864 Jackson County American Civil War Union-2,500, Confederacy- 8,500 ? United States vs. Confederate States Confederate victory
Independence October 21–22, 1864 Independence American Civil War Union-22,000, Confederacy-8,500 140 United States vs. Confederate States Confederate victory
Big Blue October 22–23, 1864 Kansas City American Civil War Union-2 divisions, Confederacy-2 divisions ? United States vs. Confederate States Union victory
Westport October 23, 1864 Westport American Civil War Union-22,000, Confederacy- 8,500 3,000 United States vs. Confederate States Union victory
Charlot October 25, 1864 Vernon County American Civil War Union-2 brigades, Confederacy- 1 division ? United States vs. Confederate States Union victory
2nd Newtonia October 28, 1864 Newtonia American Civil War Union-? Confederacy-? 650 United States vs. Confederate States Union victory

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