William Haines Lytle | |
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| Born | November 2, 1826 Cincinnati, Ohio |
| Died | September 20, 1863 (aged 36) Chickamauga, Georgia |
| Place of burial | Spring Grove Cemetery, Cincinnati, Ohio |
| Allegiance | United States of America Union |
| Service/ | United States Army Union Army |
| Years of service | 1846–1848; 1861–1863 |
| Rank |  Brigadier General |
| Commands | 10th Ohio Infantry |
| Battles/wars | Mexican–American War American Civil War |
| Signature | .png){kind=small} |
William Haines Lytle (November 2, 1826 – September 20, 1863) was a politician in Ohio, renowned poet, and military officer in the United States Army during both the Mexican–American War and American Civil War, killed in action as a brigadier general.