Era
20th century
75
Civil War, 1861-1865
39
World War, 1939-1945
36
19th century
22
21st century
16
War of 1812
14
Korean War, 1950-1953
8
1945-1955
6
2001-
6
Revolution, 1775-1783
6
American Invasion, 1989
5
German occupation, 1943-1945
5
Japanese occupation, 1942-1945
5
1767-1845
4
American Invasion, 1983
4
Vietnam War, 1961-1975
4
World War, 1914-1918
4
1945-1975
3
2003-
3
Persian Gulf War, 1991
3
1783-1789
2
1783-1815
2
1783-1865
2
1809-1865
2
1838-1865
2
1865-1877
2
1865-1950
2
1890-1969
2
18th century
2
1939-1945
2
1945-1972
2
1945-1990
2
1946-1973
2
1961-1969
2
1991-2003
2
1993-2001
2
2001-2021
2
Allied intervention, 1918-1920
2
Allied occupation, 1918-1930
2
Blockade, 1948-1949
2
Iraq War, 2003-2011
2
Mexican War, 1846-1848
2
Siege, 1781
2
Siege, 1863
2
Siege, 1864-1865
2
To 1900
2
1723-1790
1
1725-1807
1
1732-1799
1
1735-1819
1
more ...