Military officer; born in
Cold Spring, N. Y., Jan. 8, 1830; graduated at
West Point in 1850, entering the
topographical engineers, and was assistant
Professor of Mathematics at the Military Academy from 1859 to 1861.
He was made colonel of the 5th
New York Volunteers, August, 1861, and commanded a brigade in the campaign of 1862.
In September he was promoted brigadier-general.
He engaged in the battles of
Manassas (or
second Bull Run),
Antietam, and
Fredericksburg.
After Feb. 4, 1863, he was chief of topographical engineers of the Army of the Potomac.
He was engaged in the battles of
Chancellorsville and
Gettysburg (where he was wounded), and in the combats at
Auburn and Bristow's Station.
In March, 1864, he was placed in command of the 5th Army Corps, which post he held until April. 1865, in the campaign against
Richmond, having been made major-general of
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volunteers in May, 1863.
In that campaign he was exceedingly active and efficient, from the
battle of the Wilderness to the battle of
Five Forks.
In March, 1865, he was brevetted major-general, United States army.
He was the author of
Explorations in the Dakota country;
Preliminary report of explorations in Nebraska and Dakota in the years 1855–;57; and
An account of the 5th army Corps at the battle of five Forks.
He died in
Newport, R. I., Aug. 8, 1882.
A memorial statue of him was erected on
Little Round Top,
Gettysburg, in 1888.
