Era
1939-1945
1939 - 1945
112
German occupation, 1940-1945
89
Occupation, 1939-1945
45
20th century
31
1929-1945
24
1906-1962
20
Warsaw Ghetto Uprising, 1943
18
German occupation, 1941-1944
17
1889-1945
16
Bombardment, 1945
16
1929-
11
1936-1953
11
Japanese occupation, 1942-1945
11
1878-1953
10
Uprising, 1944
10
1904-1942
9
1908-1974
9
1925-
8
1925-2023
8
1933-1945
8
World War, 1939-1945
8
German occupation, 1943-1945
7
Siege, 1941-1944
7
1900-1944
6
1906-1975
6
1939-
6
1897-1944
5
1900-1999
5
1905-1984
5
1912-1954
5
1913-1991
5
1921-1977
5
1926-
5
1928-2016
5
1940-1944
5
1943-
5
Civil War, 1936-1939
5
1874-1965
4
1884-1943
4
1898-1979
4
1910-2008
4
1911-
4
1911-1979
4
1915-1979
4
1916-1999
4
1917-1936
4
1919-1987
4
1919-2006
4
1919-2009
4
more ...