Class of June 24, 1861

Patrick Henry O'Rorke: Born Mar. 28, 1836, County Cavan, Ireland.

Military History. — Cadet at the Military Academy, July 1, 1857, to June 24, 1861, when he was graduated and promoted in the Army to

Bvt. Second Lieut., Corps of Engineers, June 24, 1861.

Second Lieut., Corps of Engineers, June 24, 1861.

Served during the Rebellion of the Seceding States, 1861‑63: in drilling Volunteers at Washington, D. C., July 3‑10, 1861; in the Manassas Campaign of July, 1861, being engaged on the staff of Brig.‑General D. Tyler in the Action of Blackburn's Ford, July 18, 1861, — and Battle of Bull Run, July 21, 1861; as Asst. Engineer in the construction of the Defenses of Washington, D. C., July 23 to Aug. 2, 1861, — at Ft. Monroe, Va., Aug. 2 to Oct. 3, 1861, — with the Port Royal Expeditionary Corps, Oct. 11, 1861, to Mar. 15, 1862, — and in the Department of the South,

(Bvt. Captain, Mar. 15, 1862, for Meritorious Services with the Port Royal Expeditionary Corps)

making reconnoissances and constructing field-works, Mar. 15 to Sep. 19,

(Colonel, 140th New York Volunteers, Sep. 19, 1862)

1862; in command of Regiment (Army of the Potomac) in the Maryland Campaign, Sep. to Nov., 1862, being engaged in the March to Falmouth, Va., Oct.‑Nov., 1862; in the Rappahannock Campaign (Army of the Potomac), Dec., 1862, to June, 1863, being engaged in the Battle of Fredericksburg,

(First Lieut., Corps of Engineers, Mar. 3, 1863)

Dec. 13, 1862, — and Battle of Chancellorsville, May 2‑4, 1863;

(Bvt. Major, Dec. 13, 1862,
for Gallant and Meritorious Services in the Battle of Fredericksburg, Va.)

(Bvt. Lieut.‑Colonel, May 1, 1863,
for Gallant and Meritorious Services in the Battle of Chancellorsville, Va.)

in the Pennsylvania Campaign (Army of the Potomac), June‑July, 1863, being engaged in the Battle of Gettysburg, July 2, 1863, when, while

(Bvt. Colonel, July 2, 1863,
for Gallant and Meritorious Services in the Battle of Gettysburg, Pa.)

successfully repelling the enemy's Attack on the left of our line, he was

Killed, July 2, 1863, at the Battle of Gettysburg, Pa.: Aged 27.

Buried, Holy Sepulchre Cemetery, Rochester, NY.