Era
20th century
78
1945-1989
33
21st century
33
1900-1999
32
1989-
25
1989-1993
13
2000-2099
12
2001-2009
12
1946-
11
1953-1961
11
19th century
10
1908-1973
9
1917-1963
9
1924-2018
9
1961-1963
9
1963-1969
9
1977-1981
9
Bombardment, 1945
9
Since 1989
9
1861-1865
8
1945-
8
1969-1974
8
1981-1989
8
1809-1865
7
1884-1972
7
1890-1969
7
1993-2001
7
1882-1945
6
1913-1994
6
1974-1977
6
Since 1945
6
1923-
5
1945-1953
5
2009-2017
5
Since 1900
5
1800-1899
4
1924-
4
1933-1945
4
2001-
4
Intervention, 1956
4
Israeli intervention, 1982-1985
4
1893-1971
3
1921-
3
1936-1945
3
1981-1993
3
2003-
3
Civil War, 1861-1865
3
1748-1832
2
1775-1945
2
1857-1861
2
more ...