John Curtis Caldwell | |
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| Born | April 17, 1833 Lowell, Vermont |
| Died | August 31, 1912 (aged 79) Calais, Maine |
| Place of burial | |
| Allegiance | |
| Service/ | |
| Years of service | 1861–1866 |
| Rank | Brigadier General Brevet Major General |
| Commands |
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| Battles/wars | American Civil War: |
| Other work | Lawyer, Diplomat |
John Curtis Caldwell (April 17, 1833 – August 31, 1912) was a teacher, a Union general in the American Civil War, and an American diplomat.