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Bill Thayer

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 [decorative delimiter] Class of 1835

Vol. I

(Born Vt.)

Benjamin S. Roberts

(Ap'd Vt.)


Born Nov. 18, 1810.​a

Military History. — Cadet at the Military Academy, July 1, 1830, to July 1, 1835, when he was graduated and promoted in the Army to

Bvt. Second Lieut., 1st Dragoons, July 1, 1835.

Served: on frontier duty at Ft. Des Moines, Io., 1835‑37, — Ft. Leavenworth,

(Second Lieut., 1st Dragoons, May 31, 1836)

(First Lieut., 1st Dragoons, July 31, 1837)

Kan., 1837‑38, — and Osage Country, 1838; and on Recruiting service, 1838‑39.

Resigned, Jan. 28, 1839.

Civil History. — Civil Engineer, 1839‑42. Counselor at Law, 1843‑46. Lieut.‑Colonel, Iowa Militia, 1844‑46.

Military History. — Re-appointed in the U. S. Army with the rank of

First Lieut., Mounted Rifles, May 27, 1846.

Served: on Recruiting Service, 1846; in the War with Mexico, 1846‑47, being engaged in the Siege of Vera Cruz, Mar. 9‑29, 1827, —

(Captain, Mounted Rifles, Feb. 16, 1847)

— Skirmish of Puente del Medio, Mar. 24, 1847 — Battle of Cerro Gordo, Apr. 17‑18, 1847, — Skirmish of San Juan de los Llanos, Aug. 1, 1847, — Battle of Contreras, Aug. 19‑20, 1847, — Battle of Churubusco, Aug. 20, 1847, — Storming of Chapultepec, Sep. 13, 1847, — Assault and

(Bvt. Major, Sep. 13, 1847,
for Gallant and Meritorious Conduct in the Battle of Chapultepec, Mex.)

Capture of the City of Mexico, Sep. 13‑14, 1847, — and Action of Tlascala, Nov. 10, 1847;​1 on Recruiting service, 1847‑48; on frontier duty

(Bvt. Lieut.‑Colonel, Nov. 24, 1847,
for Gallant and Meritorious Conduct in the Action with the Enemy at Matamoras, Nov. 23, and at the Pass of Galaxara, Mex., Nov. 24, 1847)

 p626  at Ft. Leavenworth, Kan., 1848‑49, — and Ft. Laramie, Dak., 1849; absent on surgeon's certificate of disability, 1850‑52; in Topographical Bureau, Washington, D. C., examining land titles, etc., Feb. 21, 1852, to Mar. 10, 1853; absent on surgeon's certificate of disability, 1853‑54; on frontier duty at Ft. Ewell, Tex., 1854; absent on surgeon's certificate of disability, 1854‑55; on frontier duty at Ft. McIntosh, Tex., 1855, — Scouting, 1855‑56, — Ringgold Barracks, Tex., 1856, — March to New Mexico, 1856, — Los Lunas, N. M., 1856, — and Albuquerque, N. M., 1856‑57; absent on surgeon's certificate of disability, 1857‑60; on detached service, 1860; and on frontier duty at Hatch's Ranch, N. M., 1860‑61, — and Ft. Stanton, N. M., 1861.

Served during the Rebellion of the Seceding States, 1861‑66: in Operations

(Major, Mounted Rifles, May 13, 1861: 3d Cavalry, Aug. 3, 1861)

in New Mexico, in command of Southern District, Aug. 10, 1861, to Apr. 18, 1862, and of Northern District, Apr. 18 to June 1, 1862, being engaged in the Defense of Ft. Craig, Jan.‑Feb., 1862, — Combat of Valverde,

(Bvt. Colonel, Feb. 21, 1862,
for Gallant and Meritorious Services at the Battle of Valverde, N. M.)

Feb. 21, 1862, — Skirmish before Albuquerque, Apr. 8‑9, 1862, — and Action of Peralta, Apr. 15, 1862; as Chief of Cavalry, July 28 to

(Brig.‑General, U. S. Volunteers, July 16, 1862)

Sep. 3, 1862, and Acting Inspector-General, Aug. 26 to Sep. 3, 1862, of the Army of Virginia, being engaged in the Skirmishes in front of Cedar Mountain, Aug. 7‑8, 1862, — Battle of Cedar Mountain, Aug. 9, 1862, — Actions at Rappahannock Station, Aug. 21‑22, and at Sulphur Springs, Aug. 23‑24, 1862, — and Battle of Manassas, Aug. 29‑30, 1862; as Acting Inspector-General of the Department of the Northwest, Sep.‑Nov., 1862, being engaged in command of an Expedition against the Chippewa Indians in the Mille-Lacs Country, Nov., 1862; in command of upper defenses of Washington, D. C., Feb.‑Mar., 1863, — and of independent brigade, in Operations in Western Virginia, Mar. 23 to May 23, 1863; in command of the District of Iowa, June 8 to Dec. 2, 1863; at Davenport, Io., awaiting orders, Dec. 2, 1863, to Feb. 12, 1864; in command of District of Carrollton, La., Mar. 8 to Apr. 7, 1864, — of the forces at Pass Caballo and Matagorda Island, Tex., Apr. 7 to June 18, 1864, — and of 1st division of 19th Army Corps, District of Carrollton, La., June 18 to July 4, 1864; on sick leave of absence, July 4 to Oct. 26, 1864; as Chief of Cavalry, Department of the Gulf, Oct. 26, 1864, to Jan. 24, 1865; in command of District of West Tennessee, Feb. 3‑16, and Mar., 1865; in command of Cavalry Division, District of West Tennessee,

(Bvt. Brig.‑General, U. S. Army, Mar. 13, 1865,
for Gallant and Meritorious Services at the Battle of Cedar Mountain, Va.)

(Bvt. Major-General, U. S. Vols., Mar. 13, 1865,
for Gallant and Meritorious Conduct
in the Battle of Cedar Mountain, Va., on the 9th of August, 1862,
and in the Battle of Manassas, Va., on the 29th and 30th of August, 1862)

May 15 to July 11, 1865; and on leave of absence, July 11, 1865, to May 18, 1867.

Mustered out of Volunteer Service, Jan. 15, 1866.

Lieut.‑Colonel, 3d Cavalry, July 28, 1866.

Served: on Recruiting service, May 22 to July 2, 1867; on leave of absence, 1867; on frontier duty at Ft. Union, N. M., 1867‑68, — and Ft.  p627 Sumner, N. M., 1868; and as Professor of Military Science in Yale College, New Haven, Ct., Aug. 8, 1868, to Dec. 14, 1870.

Retired from Active Service, Dec. 15, 1870,
on his own application, after 30 consecutive Years of Service.

Died, Jan. 29, 1875, at Washington, D. C.: Aged 64.

Obituary notice in Annual Report, Association of Graduates, for 1875.º

Buried, Dellwood Cemetery,​b Manchester, VT.

The Author's Note:

1 Received, Jan. 15, 1849, a Sword of Honor for his Mexican War services, from the Legislature of the State of Iowa.

Thayer's Notes:

a Gen. Roberts' birthdate is from his tombstone, q.v.

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b Gen. Roberts' later career, as condensed and presented without commentary in the Register, is puzzling; the biographical sketch by Russ Dodge on that page makes sense of it.

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