This is an incomplete list of all military confrontations that have occurred within the boundaries of the modern U.S. State of Illinois since European contact.
NameDateLocationWarResultDeadBelligerentsBattle for Grand KaskaskiaSeptember 18, 1680Near Present-day Ottawa, IllinoisBeaver WarsIroquois Victory~880 and Tamaroa vs IroquoisSiege of Fox FortAugust–September 1730Present-day McLean County, IllinoisFox WarsFrench and Allied Victory~500 and Native Allies vs MeskwakiCapture of Fort GageJuly 5, 1778Present-day Kaskaskia, IllinoisAmerican Revolutionary WarUS Victory0 vs Battle of St. LouisMay 25, 1780Present-day Cahokia, Illinois and St. Louis, MissouriAnglo-Spanish WarSpanish/US Victory25+ and vs and Indian NationsBattle of Fort DearbornAugust 15, 1812Present-day Chicago, IllinoisWar of 1812Potawatomi Victory67 vs PotawatomiBattle of Africa PointApril 18, 1813near Palestine, IllinoisWar of 1812Kickapoo Victory9 vs KickapooBattle of Rock Island RapidsJuly 19, 1814Campbell's Island, IllinoisWar of 1812Native Victory18+ vs Sauk, Meskwaki and KickapooBattle of Stillman's RunMay 14, 1832Near present-day Stillman Valley, IllinoisBlack Hawk WarNative Victory15-17 vs Sauk and MeskwakiBuffalo Grove ambushMay 19, 1832Near present-day Polo, IllinoisBlack Hawk WarNative Victory1+ vs KickapooSt. Vrain MassacreMay 19, 1832Near present-day Pearl City, IllinoisBlack Hawk WarNative Victory4 vs Ho-Chunk or Sauk and MeskwakiPlum River raidMay 21, 1832Near present-day Savanna, IllinoisBlack Hawk War0 vs Sauk or MeskwakiBattle of Kellogg's GroveJune 16 and 25, 1832Near Kent, IllinoisBlack Hawk WarUnited States Victory23+ vs Sauk, Meskwaki and KickapooBattle of Waddams GroveJune 18, 1832Near Waddams Grove, IllinoisBlack Hawk WarUnited States Victory5-9 vs SaukBattle of Apple River FortJune 24, 1832Near Elizabeth, IllinoisBlack Hawk WarUnited States Victory1+ vs Sauk and MeskwakiIllinois Mormon WarJune 10, 1844 - September 16, 1846Nauvoo, IllinoisIllinois Victory~10 and Illinois Militia vs Nauvoo LegionCharleston riotMarch 28, 1864Charleston, IllinoisCivil War9 Union Army vs CopperheadsHaymarket AffairMay 4, 1886Chicago, Illinois11Chicago Police Department vs Federation of Organized Trades and Labor UnionsBattle of VirdenOctober 12, 1898Virden, IllinoisCoal Wars11United Mine Workers vs Thiel Detective Service CompanyHerrin MassacreJune 21–22, 1922Herrin, IllinoisCoal Wars23United Mine Workers vs Southern Illinois Coal Company
References