a memorial for all wars: the Polynational War Memorial


Wars since 1900

A list of all wars in the 20th and 21st centuries, based on data by COW, Prio and UCDP. See the source page or the FAQ for more information. See the new stats page for a summary of casualty data and nation-based stats. And get a preview of the experimental timeline of all wars since 1900. What's new? Check the update logs for 2018, 2017 and 2016 .


Name of War   Years   Fatalities Type Mem. Note
Russo-Ukrainian War 2014 - 2022 91,003 1 [2] U
Syrian civil war 2011 - 2022 306,582 1 [3] U
Russia vs Chechnyan Secessionists, the Caucasus Emirate, IS 1993 - 2017 24,235 1 [7] U
Georgia civil war and South Ossetia and Abkhazia conflict 1991 - 2008 3,538 1 U
Russian Revolution and Civil War 1917 - 1922 802,225 1 [1]
World War I 1914 - 1918 10,670,868 1 [12]
Iranian Constitution War 1908 - 1909 1,100 1
Russian Revolution 1905 1905 - 1906 1,500 1
Russo-Japanese war 1904 - 1905 151,831 1 [1]
The Boxer Rebellion 1900 - 1900 3,003 1
Sino-Russian War 1900 - 1900 4,000 1


Note about search on a specific nation: results produced by this feature are incomplete and inconsistent and should be seen as a means to narrow down the list rather than anything else. Work is being done to correct mistakes and standardize the parameters. At the bottom of the list of countries are some nations that do not exist in a similar form today.

Note about search on a specific year: "ongoing armed conflict" does not imply that all of the conflicts presented for a specific year should be classified as war.

Note about search on a specific time period: finds all wars that started after a specific year (1st search parameter) and ended before a specific year (2nd param).

Note about categories: this new feature is currently being tested and the content of these categories may be incomplete or inconsistent. More categories will be added in the future.