Third Brigade
Third Division, Second Army Corps

A standard brigade marker is on North Hancock Avenue (top right) and a monument is on Sickles Avenue near the Klingle farm (bottom right).

From the Hancock Avenue marker:

Army of the Potomac
Second Corps Third Division
Third Brigade
Col. George L. Willard
Col. Eliakim Sherrill
Lieut. Col. James M. Bull
39th(4Cos.) 111th 126th New York Infantry

July 2. Took position in the morning along Cemetery Ridge at right of the Angle. Near sunset went to the left to support Third Corps. Charged Brig. Gen. Barksdale's Brigade in the wooded swale at the head of Plum Run forcing it back and capturing many prisoners. The 39th New York recaptured Battery I 5th U. S. from the 21st Miss. Col. Willard was killed and Brig. Gen. Barksdale mortally wounded. At dark the Brigade returned and was held in reserve.

July 3. Engaged on the skirmish line with much loss. At 3 P. M. after a terrific cannonade of two hours the Brigade was moved up to the line of the Second Brigade and assisted in repulsing Longstreet's assault in which Col. Sherrill was mortally wounded. A large detail from the Brigade under Capt. Armstrong of the 125th New York and the 8th Ohio on the skirmish line withdrew to the right and poured in a deadly fire upon the left of the assaulting lines and then charging captured prisoners and flags.

Casualties Killed 11 Officers 128 Men Wounded 26 Officers 516 Men Captured or Missing 33 Men Total 714

From the Sickles Avenue monument:

The 3rd. Brigade of the 3rd. Division, 2nd. Corps was conducted by General Hancock at seven o'clock P.M., July 2nd. 1863, from near Ziegler's Grove to the rear of a bushy swale along Plum Run; the 39th N.Y. commanded by Major Hugo Hildebrand, faced left to guard against a flank and rear attack, the 125th N.Y. commanded by Col. Levin Crandall, took position on the left, the 126th N.Y., commanded by Col. C.D. MacDougall, on the right, and charged the 13th. 17th. and 18th Miss. regiments of Barksdale's Brigade in line in the thicket and drove them through the swale and up the slope toward the Emmitsburg Road to within 317 Yards, due east from this position when the enemy artillery fire became very severe and the Brigade retired to the swale where Col. George L. Willard commanding the Brigade was killed. After being relieved at dark the Brigade returned to near its former position on Cemetery Ridge.