Education
He graduated from the United States Military Academy at West Point in 1849, when he was appointed brevet Second Lieutenant in the Fourth United States Infantry.
He graduated from the United States Military Academy at West Point in 1849, when he was appointed brevet Second Lieutenant in the Fourth United States Infantry.
Milton Cogswell was the fortieth mayor of Charleston, South Carolina, serving in 1868. In 1850 he was assigned to duty on the frontier, but he was recalled and detailed as Assistant Professor of Mathematics at West Point until 1856. When the Civil War broke about, Cogswell went into active service.
In July, 1861, he was made Colonel of the Forty-Second New-York Volunteers, and at the battle of Ball"s Bluff was captured by the Confederates and incarcerated in Libby Prison, until being exchanged.
At the close of the war he was assigned to garrison duty at Baltimore, and afterward served as Acting Judge-Advocate of the Department of North Carolina. In 1868 he was made Provisional Mayor of Charleston from March to July and was placed in charge of civil affairs at Summerville, South Carolina.
He was afterward performed various duties in the South and on the Western frontier until 1871, when he retired from active service on account of a disability contracted in the line of duty. He died on November 20, 1882, and is buried at Arlington Cemetery.