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America’s War History: How Many Years Has the U.S. Been at War?

How Many Years Has the U.S. Been at War?

The U.S. Has Only Been At Peace For 17 Years Total Since Its Birth.

I have reproduced a year-by-year timeline of America’s wars, which reveals something quite interesting: since the United States was founded in 1776, she has been at war during 229 out of her 246 calendar years of existence as of 2022.

In other words, there were only 17 calendar years in which the U.S. did not wage any wars.

Let’s put this in perspective

  • Pick any year since 1776 and there is about a 93% chance that America was involved in some war during that calendar year.
  • No U.S. president truly qualifies as a peacetime president.  Instead, all U.S. presidents can technically be considered “war presidents.”
  • The U.S. has never gone a decade without war.
  • The only time the U.S. went five years without war (1935-40) was during the isolationist period of the Great Depression.

How Many Years Has the U.S. Been at War?

And here is the year-by-year timeline of America’s major wars:

America’s War History: A Year-by-year Timeline of Major Wars

1776 – American Revolutionary War, Chickamagua Wars, Second Cherokee War, Pennamite-Yankee War

1777 – American Revolutionary War, Chickamauga Wars, Second Cherokee War, Pennamite-Yankee War

1778 – American Revolutionary War, Chickamauga Wars, Pennamite-Yankee War

1779 – American Revolutionary War, Chickamauga Wars, Pennamite-Yankee War

1780 – American Revolutionary War, Chickamauga Wars, Pennamite-Yankee War

1781 – American Revolutionary War, Chickamauga Wars, Pennamite-Yankee War

1782 – American Revolutionary War, Chickamauga Wars, Pennamite-Yankee War

1783 – American Revolutionary War, Chickamauga Wars, Pennamite-Yankee War

1784 – Chickamauga Wars, Pennamite-Yankee War, Oconee War

1785 – Chickamauga Wars, Northwest Indian War

1786 – Chickamauga Wars, Northwest Indian War

1787 – Chickamauga Wars, Northwest Indian War

1788 – Chickamauga Wars, Northwest Indian War

1789 – Chickamauga Wars, Northwest Indian War

1790 – Chickamauga Wars, Northwest Indian War

1791 – Chickamauga Wars, Northwest Indian War

1792 – Chickamauga Wars, Northwest Indian War

1793 – Chickamauga Wars, Northwest Indian War

1794 – Chickamauga Wars, Northwest Indian War

1795 – Northwest Indian War

1796 – No major war

1797 – No major war

1798 – Quasi-War

1799 – Quasi-War

1800 – Quasi-War

1801 – First Barbary War

1802 – First Barbary War

1803 – First Barbary War

1804 – First Barbary War

1805 – First Barbary War

1806 – Sabine Expedition

1807 – No major war

1808 – No major war

1809 – No major war

1810 – U.S. occupies Spanish-held West Florida

1811 – Tecumseh’s War

1812 – War of 1812, Tecumseh’s War, Seminole Wars, U.S. occupies Spanish-held Amelia Island and other parts of East Florida

1813 – War of 1812, Tecumseh’s War, Peoria War, Creek War, U.S. expands its territory in West Florida

1814 – War of 1812, Creek War, U.S. expands its territory in Florida, Anti-piracy war

1815 – War of 1812, Second Barbary War, Anti-piracy war

1816 – First Seminole War, Anti-piracy war

1817 – First Seminole War, Anti-piracy war

1818 – First Seminole War, Anti-piracy war

1819 – Yellowstone Expedition, Anti-piracy war

1820 – Yellowstone Expedition, Anti-piracy war

1821 – Anti-piracy war (see note above)

1822 – Anti-piracy war (see note above)

1823 – Anti-piracy war, Arikara War

1824 – Anti-piracy war

1825 – Yellowstone Expedition, Anti-piracy war

1826 – No major war

1827 – Winnebago War

1828 – No major war

1829 – No major war

1830 – No major war 

1831 – Sac and Fox Indian War

1832 – Black Hawk War

1833 – Cherokee Indian War

1834 – Cherokee Indian War, Pawnee Indian Territory Campaign

1835 – Cherokee Indian War, Seminole Wars, Second Creek War

1836 – Cherokee Indian War, Seminole Wars, Second Creek War, Missouri-Iowa Border War

1837 – Cherokee Indian War, Seminole Wars, Second Creek War, Osage Indian War, Buckshot War

1838 – Cherokee Indian War, Seminole Wars, Buckshot War, Heatherly Indian War

1839 – Cherokee Indian War, Seminole Wars

1840 – Seminole Wars, U.S. naval forces invade Fiji Islands

1841 – Seminole Wars, U.S. naval forces invade McKean Island, Gilbert Islands, and Samoa

1842 – Seminole Wars

1843 – U.S. forces clash with Chinese, U.S. troops invade African coast

1844 – Texas-Indian Wars

1845 – Texas-Indian Wars

1846 – Mexican-American War, Texas-Indian Wars

1847 – Mexican-American War, Texas-Indian Wars

1848 – Mexican-American War, Texas-Indian Wars, Cayuse War

1849 – Texas-Indian Wars, Cayuse War, Southwest Indian Wars, Navajo Wars, Skirmish between 1st Cavalry and Indians

1850 – Texas-Indian Wars, Cayuse War, Southwest Indian Wars, Navajo Wars, Yuma War, California Indian Wars, Pitt River Expedition

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