Thornton Fleming Brodhead (1822 – August 31, 1862)[1] was a brevet brigadier general during the American Civil War.

Thornton Fleming Brodhead was born in South New Market, New Hampshire, on September 22, 1822.

Brodhead enlisted in April 1847 as 1st Lieutenant and Adjutant in the 15th U.S. Infantry during the Mexican War, and he was brevetted to the rank of captain on August 20, 1847.

He was made a full captain on December 2, 1847, and was mustered out on July 31, 1848, when the troops were disbanded.

At the beginning of the civil war he raised the 1st Michigan cavalry regiment,[2] at the head of which he served under Generals Banks, Fremont, and Pope[citation needed].