| Wars | From | To | Regulars | Militia and Volunteers | Total [1] |
| War of the Revolution | Apr. 19, 1775 | Apr. 11, 1783 | 130,711 | 164,080 | 209,781 |
| Northwestern Indian Wars | Sept. 19,1790 | Aug. 3, 1795 | ----- | ----- | 8,983 |
| War with France | July 9, 1798 | Sept. 20, 1800 | ----- | ----- | [2] 4,493 |
| War with Tripoli | June 10, 1801 | June 4, 1805 | ----- | ----- | [2] 3,330 |
| With Great Britain, 1812 | June 18, 1812 | Feb. 17, 1815 | 85,000 | 471,622 | 576,622 |
| Creek Indian War | July 28, 1813 | Aug. 9, 1814 | 600 | 13,181 | 13,781 |
| Seminole Indian War | Nov. 20, 1817 | Oct. 21, 1818 | 1,000 | 6,911 | 7,911 |
| Black Hawk Indian War | Apr. 21, 1831 | Sept. 31, 1832 | 1,339 | 5,126 | 6,495 |
| Cherokee Disturbance | 1836 | 1837 | ----- | 9,494 | 9,494 |
| Florida Indian War | Dec. 23, 1835 | Aug. 14, 1843 | 11,169 | 29,953 | 41,122 |
| Creek Indian War | May 5, 1836 | Sept. 30, 1837 | 935 | 12,483 | 13,418 |
| Aroostook Disturbance | 1836 | 1839 | ----- | 1,500 | 1,500 |
| War with Mexico | Apr. 24, 1846 | July 4, 1848 | 30,954 | 73,776 | 112,230 |
| Apache and Navajo War | 1849 | 1855 | 1,500 | 1,061 | 2,561 |
| Seminole Indian War | 1856 | 1858 | ----- | 3,687 | 3,687 |
| War of the Rebellion | 1861 | 1865 | ----- | ----- | [3] 2,772,408 |
| Spanish-American War | Apr. 21, 1898 | Aug. 12, 1898 | ----- | ----- | [4] 274,717 |
| Philippine Insurrection | 1899 | 1900 | ----- | ----- | 60,000 |