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This is a list of wars involving the Federative Republic of Brazil and its predecessor states, from 1815 to the present day.

United Kingdom of Portugal, Brazil and the Algarves (1815–1822)

Conflict	Combatant 1	Combatant 2	Result	King
Portuguese conquest of the Banda Oriental (1816–1820)	U.K. of Portugal, Brazil and the Algarves	Federal League  Entre Ríos Misiones Corrientes Santa Fe Córdoba	Victory Annexation of the Banda Oriental.	John VI

Empire of Brazil (1822–1889)

Conflict	Combatant 1	Combatant 2	Result	Emperor
Brazilian War of Independence (1822–1825)	Brazil	Portugal	Victory Treaty of Rio de Janeiro (1825)	Pedro I
Confederation of the Equator (1824)	Brazil	Confederates	Loyalist victory Execution of Frei Caneca.
Cisplatine War (1825–1828)	Brazil	United Provinces Thirty-Three Orientals	Stalemate Preliminary Peace Convention
Cabanagem (1835–1840)	Brazil	Rebels	Loyalist victory Devastation of the economy of Grão-Pará Province; Death of roughly 20% of the population in the province.	Pedro II
Ragamuffin War (1835–1845)	Brazil	Riograndense Republic  Juliana Republic	Loyalist victory Treaty of Poncho Verde
Sabinada (1837–1838)	Brazil	Bahia Republic	Loyalist victory Reincorporation of Bahia into Brazil.
Platine War (1851–1852)	Brazil Defense Government  Entre Ríos  Corrientes  Santa Fe	Argentina Cerrito Government Federalists	Victory End of Juan Manuel de Rosas' government; Emergence of Brazil as the hegemonic power in the Platine region.
Uruguayan War (1864–1865)	Brazil Colorados Unitarians  Argentina	Uruguay Blancos Federalists  Paraguay (support)	Victory Takeover of the Uruguayan government by the Colorado Party; Invasion of Brazilian and Argentine provinces by Paraguay, prompting the start of the Paraguayan War.
Paraguayan War (1864–1870)	Brazil  Argentina  Uruguay	Paraguay	Victory Loizaga–Cotegipe Treaty

Brazilian Republic (1889–)

Conflict	Combatant 1	Combatant 2	Result	President
Federalist Revolution (1893–1895)	Brazilian government  Rio Grande do Sul	Federalists Navy mutineers	Government victory Permanence of Júlio de Castilhos as governor of Rio Grande do Sul.	Floriano Peixoto
War of Canudos (1896–1897)	Brazilian government	Canudos inhabitants	Government victory Total destruction of Canudos; Death of most of the population in the settlement.	Prudente de Morais
Acre War (1899–1903)	Republic of Acre Brazil	Bolivia	Victory Treaty of Petrópolis	Campos Sales Rodrigues Alves
Contestado War (1912–1916)	Brazilian government  Paraná Santa Catarina	Rebels	Government victory Revolt suppressed.	Hermes da Fonseca
				Venceslau Brás
First World War (1914–1918) (Limited involvement, 1917–1918)	France  United Kingdom  Russia  United States  Italy  Japan Brazil and others	Germany  Austria-Hungary  Ottoman Empire  Bulgaria and others	Victory Fall of the German, Austro-Hungarian, and Ottoman empires; Formation of new countries in Europe and the Middle East; Transfer of German colonies and regions of the former Ottoman Empire to other powers; Establishment of the League of Nations, which led to the creation of the United Nations.
Constitutionalist Revolution (1932)	Brazilian government	Constitutionalists  São Paulo State Maracaju State Frente Única Gaúcha	Government military victory Surrender of the revolutionary forces; Promulgation of a new constitution, the main goal of the uprising, in 1934.	Getúlio Vargas
Second World War (1939–1945) (Limited involvement, 1942–1945)	United States  Soviet Union  United Kingdom  China Brazil and others	Germany  Italy  Japan and others	Victory Collapse of Nazi Germany and fall of the Italian and Japanese empires; Creation of the United Nations; Emergence of the United States and the Soviet Union as superpowers; Beginning of the Cold War.
Dominican Civil War (1965)	Loyalists  United States IAPF Brazil  Paraguay  Nicaragua  Costa Rica  El Salvador  Honduras	Constitutionalists	Victory Deposition of Juan Bosch; Election of Joaquín Balaguer as the new president of the Dominican Republic.	Humberto Castelo Branco

Peacekeeping missions

• International Force for East Timor
• 2004 Haitian coup d'état
• United Nations Stabilization Mission in Haiti
• United Nations Interim Force in Lebanon

See also

• Military history of Brazil

Bibliography

• Fausto, Boris; Fausto, Sérgio (2022). História Concisa do Brasil. EDUSP. ISBN 978-85-3141-582-1.
• Halperín Donghi, Tulio (2007). The Contemporary History of Latin America. Durham: Duke University Press. ISBN 978-08-2231-374-8.

v t e Years in Brazil (1822–present)
19th century	1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900
20th century	1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
21st century	2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

• Wars involving Brazil
• Lists of wars by country involved
• Brazil history-related lists
• Brazilian military-related lists