Daniel Butterfield (1831-1901), American soldier, was born in Utica, New York. He graduated at Union College in 1849, and when the Civil War broke out he became colonel of the 12th New York militia regiment. On the 14th of May 1861 he was transferred to the regular army as a lieutenant-colonel, and in September he was made a brigadier-general U.S.V. He served in Virginia in 1861 and in the Peninsular campaign of 1862, and was wounded at Games' Mill. He took part in the campaign of second Bull Run (August 1862), and in November became major-general U.S.V. and in July 1863 colonel U.S.A. At Fredericksburg he commanded the V. corps, in which he had served since its formation. After General Hooker succeeded Burnside, Butterfield was appointed chief of staff, Army of the Potomac, and in this capacity he served in the Chancellorsville and Gettysburg campaigns. Not being on good terms with General Meade he left the staff, and was soon afterwards sent as chief of staff to Hooker, with the XI. and XII. corps (later combined as the XX.) to Tennessee, and took part in the battle of Chattanooga (1863), and the Atlanta campaign of the following year, when he commanded a division of the XX. corps. His services were recognized by the brevets of brigadier-general and major-general in the regular army.

He resigned in 1870, and for the rest of his life was engaged in civil and commercial pursuits. In 1862 he wrote a manual of Camp and Outpost Duty (New York, 1862). General Butterfield died at Cold Spring, N.Y., on the 17th of July 1901.

A Biographical Memorial, by his widow, was published in 1904.