Lorenzo Thomas | |
|---|---|
 Thomas c. 1860–1870 | |
| Adjutant General of the U.S. Army | |
| In office March 7, 1861 – February 22, 1869 | |
| President | Abraham Lincoln Andrew Johnson |
| Preceded by | Samuel Cooper |
| Succeeded by | Edward D. Townsend |
| Personal details | |
| Born | October 26, 1804 New Castle, Delaware, U.S. |
| Died | March 2, 1875 (aged 70) Washington, D.C., U.S. |
| Resting place | Oak Hill Cemetery |
| Education | United States Military Academy |
| Military service | |
| Allegiance |  United States• Union |
| Branch/service |  United States Army• Union Army |
| Years of service | 1823–1869 |
| Rank |  Brigadier General Brevet Major General |
| Battles/wars | Seminole Wars Mexican-American War American Civil War |
Lorenzo Thomas (October 26, 1804 – March 2, 1875) was an American officer in the United States Army who was Adjutant General of the Army at the beginning of the American Civil War. After the war, he was appointed temporary Secretary of War by U.S. President Andrew Johnson, precipitating Johnson's impeachment.