In the Civil War, he served as assistant engineer in the Army of the Potomac during the Peninsular campaign and in the northern Virginia campaign, and from July, 1864, to September, 1865, commanded as colonel, the 1st U.S.
In the context of the Civil War, he served as a junior engineer for the Army of the Potomac during the Peninsular campaign and in the northern Virginia campaign. From July 1864 to September 1865, he led the 1st U.S.