Era
Civil War, 1861-1865
440
19th century
273
1861-1865
145
1775-1865
92
1800-1899
57
18th century
45
20th century
38
Revolution, 1775-1783
31
1865-1950
30
Colonial period, ca. 1600-1775
27
1732-1799
19
Siege, 1864-1865
19
1809-1865
16
War of 1812
16
1824-1863
15
1861 - 1865
14
1743-1826
10
17th century
10
1807-1870
10
1815-1861
10
1775-1783
9
To 1865
9
1777-1852
8
1783-1865
8
1822-1885
7
Siege, 1863
7
1600-1775
6
1732-1794
6
1808-1889
6
1815-1872
6
1833-1864
6
1884-1962
6
1693-1781
5
1751-1836
5
1814-1879
5
1818-1893
5
1856-1924
5
John Brown's Raid, 1859
5
1700-1799
4
1756-1818
4
1767-1845
4
1772-1834
4
1773-1833
4
1782-1850
4
1782-1862
4
1782-1866
4
1790-1862
4
1794-1865
4
1806-1876
4
1829-1837
4
more ...