— Army of the Potomac —
Army of the Potomac
Brig. General John Buford
First Brigade Col. Wm. Gamble
Second Brigade Col. Thos. C. Devin
Reserve Brigade Brig. Gen. Wesley Merritt
June 29 Engaged in picketing scouting and patrolling westerly and northerly to Hagerstown. Finding no Confederate force Gen. Buford with the First and Second Brigades re-crossed the mountains and encamped near Fairfield.
June 30 Arrived at Gettysburg at 11 a.m. as a detachment of Heth's Confederate Division was about to enter but it withdrew on the approach of the two Brigades of the Division. Gen. Buford deployed his Cavalry along the ridge east of Willoughby Run between the Mummasburg and Fairfield roads with pickets well advanced.
July 1 Was attacked between 8 and 9 a.m. by Heth's Division and Pegram's Artillery Battalion which were held in check until the arrival of First Corps. The Second Brigade picketed the approaches from the north and retarded the advance of Ewell's Corps until Eleventh Corps arrived. About 4 p.m. retreated to Cemetery Hill and formed on left of town and bivouacked for the night in front of Little Round Top extending pickets nearly to Fairfield.
July 2 Started in the morning for Westminster to guard Army Trains. The Reserve Brigade Cavalry Corps arrived about noon on the Emmitsburg Road and engaged for four hours the Confederate right.
Casualties. Killed 1 officer 27 men. Wounded 12 officers 104 men. Captured or missing 6 officers 268 men. Total 418.