John Baillie McIntosh | |
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| Born | June 6, 1829 Fort Brooke (Tampa), Florida Territory |
| Died | June 29, 1888 (aged 59) New Brunswick, New Jersey |
| Place of burial | Elmwood Cemetery, North Brunswick, New Jersey |
| Allegiance |  United States of AmericaUnion |
| Service |  United States Navy United States Army
|
| Years of service | 1848-1850 (Navy) 1861-1870 (Army) |
| Rank | Midshipman Brigadier General Brevet Major General |
| Unit | 2nd U.S. Cavalry |
| Commands | 3rd Pennsylvania Cavalry 2nd Brigade, 2nd Division, Cavalry Corps, Army of the Potomac 1st Brigade, 2nd Division, Cavalry Corps, Army of the Potomac 1st Brigade, 3rd Division, Cavalry Corps, Army of the Potomac |
| Battles / wars | Mexican-American War American Civil War |
John Baillie McIntosh (June 6, 1829 – June 29, 1888) was a Union Army brigadier general during the American Civil War. His brother, James M. McIntosh, served as a Confederate general until he was killed in the Battle of Pea Ridge.