American war hero who was a Union Army major at the time of the American Civil War and was awarded the the grade of brevet brigadier general United States Volunteers ranking from 1865.
He started his military career as a major in the 1st Maine Heavy Artillery Regiment.
He worked as a lawyer when he wasn't serving in the army.
His father was Vice President Hannibal Hamlin and his brother, Cyrus was a Union Army brigadier general.
He was nominated by President Andrew Johnson for the award of honorary grade of brevet brigadier general United States Volunteers in 1865.