Era
1939-1945
245
20th century
208
1900-1999
113
1939 - 1945
55
1980-1989
50
1918-1945
43
Occupation, 1939-1945
32
19th century
28
1945-1980
25
20e siècle
23
1900 - 1999
22
1914-1918
22
1945-
20
1945-1989
20
1989-
20
21st century
17
1929-
15
Uprising, 1944
14
Warsaw Ghetto Uprising, 1943
12
1800-1899
11
17th century
10
1880-1942
10
1900-1944
10
1929-1943
10
1917-1958
9
Wars of 1918-1921
9
1888-1941
8
1897-1944
8
18th century
8
1905-1938
8
1918 - 1945
8
Uprising of 1944
8
1880-approximately 1942
7
1900-2099
7
1924-1942
7
1924-2013
7
2000-2099
7
Since 1945
7
Since 1989
7
-1961
6
1864-1918
6
1884-1944
6
1889-1965
6
1894-1980
6
1924-
6
Revolution, 1863-1864
6
1800-1945
5
1860-1941
5
1863-1864
5
1878-1942
5
more ...