Era
20th century
21
Vietnam War, 1961-1975
8
To 1900
7
Civil War, 1861-1865
4
War of 1812
4
19th century
3
21st century
3
Revolution, 1775-1783
3
18th century
2
1517-
1
1759-1818
1
1779-1820
1
1780-1843
1
1783-1825
1
1783-1865
1
1800-1874
1
1812-1897
1
1840-1914
1
1857-1930
1
1858-1919
1
1870-1953
1
1878-1956
1
1882-1959
1
1884-1945
1
1886-1941
1
1888-1972
1
1898-1968
1
1901-1909
1
1903-1984
1
1908-2000
1
1911-1981
1
1911-1994
1
1913-1994
1
1920-2000
1
1936-2018
1
1937-2014
1
1939-
1
1939-1945
1
1945-
1
1945-1989
1
1975-
1
Persian Gulf War, 1991
1
Revolution, 1917-1921
1
Spanish-American War, 1898
1
Tripolitan War, 1801-1805
1
World War, 1914-1918
1