Era
Civil War, 1861-1865
1,108
20th century
987
19th century
642
1939-1945
514
1900-1999
492
1800-1899
350
1939 - 1945
226
1861-1865
218
Revolution, 1775-1783
210
18th century
178
21st century
144
1743-1826
107
17th century
107
1775-1783
102
1946-
102
1700-1799
97
1914-1918
84
1933-1945
66
1922-1969
65
1783-1809
64
2016
63
1961-1975
58
Civil War, 1642-1649
55
1614?-1657
54
2000-2099
54
16th century
49
Revolution, 1917-1921
47
-1536
45
1800-1999
41
1809-1865
41
2003-2011
41
1900 - 1999
39
1922-
39
1945-
39
Civil War, 1936-1939
37
Colonial period, ca. 1600-1775
37
To 1500
37
1925-
34
1926-1997
34
1914-1997
33
1843-1916
31
1921-
31
1914 - 1918
30
1863-1877
28
World War, 1939-1945
28
1700-1899
27
1809-1817
27
Commonwealth and Protectorate, 1649-1660
27
French and Indian War, 1754-1763
27
1918-1945
26
more ...