Era
20th century
115
19th century
63
21st century
48
20e siècle
45
Civil War, 1861-1865
40
1900-1999
37
Revolution, 1775-1783
32
18th century
23
19e siècle
23
1800-1899
17
1945-1989
17
1945-
15
1989-
14
1861-1865
10
1775-1783
9
17th century
9
21e siècle
9
1993-
8
Colonial period, ca. 1600-1775
8
1732-1799
7
1783-1865
7
1809-1865
7
1861-1865 (Guerre de Sécession)
7
1933-1945
7
1946-
7
Since 1945
7
1951-
6
1963-1969
6
1991-
6
2001-2009
6
1757-1804
5
1803-1882
5
1908-1973
5
1918-1945
5
1937-
5
1939-1945
5
2000-2099
5
Geschichte 1800-1900
5
16th century
4
1743-1826
4
1826-1885, USMA 1846
4
18e siècle
4
1924-
4
1937-2006
4
1945-1975
4
1945-1991
4
1954-
4
1961-1975
4
1965-
4
1975-
4
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