USA has fought 604 years of war in the last 250 years.

It turns out that the "War Load" for people of USA over the last 250 years is 604 years of war.

This includes all conflicts both internal and external.

1775 1783 American Revolutionary War

1776 1795 American Cherokee wars

1785 1793 Northwest Indian War

1785 1795 American Algerian War

1798 1800 Quasi-War

1801 1805 First Barbary War

1810 1813 Tecumseh's War

1812 1815 War of 1812

1813 1814 Creek War

1815 1815.5 Second Barbary War

1817 1818 First Seminole War

1823 1823.5 Arikara War

1827 1827.5 Winnebago War

1832 1832.5 Black Hawk War

1835 1842 Second Seminole War

1836 1875 Texas Comanche Wars

1846 1848 American Mexican War

1847 1855 Cayuse War

1849 1924 Apache Wars

1849 1866 Navajo Wars

1854 1861 Bleeding Kansas

1855 1856 Puget Sound War

1855 1856 Rogue River Wars

1855 1858 Third Seminole War

1855 1858 Yakima War

1856 1859 Second Opium War

1857 1858 Utah War

1858 1866 Reform War

1859 1859.5 Pig War

1859 1859.5 John Brown's Raid on Harpers Ferry

1859 1861 First and Second Cortina War

1860 1860.5 Paiute War

1861 1865 American Civil War

1861 1875 Yavapai Wars

1862 1862.5 Dakota War of 1862

1863 1865 Colorado War

1864 1868 Snake War

1865 1865.5 Powder River War

1866 1868 Red Cloud's War

1867 1867.5 Formosa Expedition

1867 1875 Comanche Campaign

1871 1871.5 United States expedition to Korea

1872 1873 Modoc War

1874 1875 Red River War

1875 1875.5 Las Cuevas War

1876 1877 Great Sioux War of 1876

1876 1877 Buffalo Hunters' War

1877 1877.5 Nez Perce War

1878 1878.5 Bannock War

1878 1879 Cheyenne War

1879 1879.5 Sheepeater Indian War

1879 1880 Victorio's War

1879 1879.5 White River War

1882 1882.5 Egyptian Expedition

1887 1887.5 Crow War

1890 1891 Ghost Dance War

1891 1893 Garza War

1896 1918 Yaqui Wars

1898 1899 Second Samoan Civil War

1898 1898.5 American-Spanish War

1899 1902 American Philippine War

1899 1913 Moro Rebellion

1899 1901 Boxer Rebellion

1909 1909.5 Crazy Snake's War

1910 1919 Mexican Border War

1912 1912.5 Little Race War

1912 1933 United States occupation of Nicaragua

1914 1915 Bluff War

1914 1914.5 United States occupation of Veracruz

1915 1934 United States occupation of Haiti

1916 1924 United States occupation of the Dominican Republic

1914 1918 World War I

1917 1923 Russian Civil War

1923 1923.5 Posey War

1939 1945 World War II

1950 1953 Korean War

1955 1964 Vietnam War

1959 1975 Laotian Civil War

1958 1961 Permesta Rebellion

1958 1958.5 Lebanon crisis

1961 1961.5 Bay of Pigs Invasion

1965 1966 Dominican Civil War

1966 1969 Korean DMZ Conflict

1967 1975 Cambodian Civil War

1982 1984 Multinational intervention in Lebanon

1983 1983.5 United States invasion of Grenada

1986 1986.5 Bombing of Libya

1987 1988 Tanker War

1989 1990 United States invasion of Panama

1990 1991 Gulf War

1991 2003 Iraqi No-Fly Zone Enforcement Operations

1992 1995 First U.S. Intervention in the Somali Civil War

1992 1995 Bosnian War and Croatian War

1994 1995 Intervention in Haiti

1998 1999 Kosovo War

2001 2021 War in Afghanistan

2002 2024 US intervention in Yemen

2003 2011 Iraq War

2004 2018 US intervention in the War in North-West Pakistan

2007 2024 Second US Intervention in the Somali Civil War

2009 2016 Operation Ocean Shield

2011 2011.5 International intervention in Libya

2011 2017 Operation Observant Compass

2013 2024 US military intervention in Niger

2014 2021 US-led intervention in Iraq

2014 2024 US intervention in the Syrian civil war

2015 2019 US intervention in Libya

2023 2024 Operation Prosperity Guardian

source: https://en.wikipedia.org/wiki/List_of_wars_involving_the_United_States