1st Pennsylvania Light Artillery, Battery B

"Henry T. Danforth, who served in Bragg's regular battery in the Mexican war, was its first captain, from which he was promoted to the lieutenant-colonelcy of the regiment. He was killed in action at Charles City Cross Roads, Virginia. Our next captain was James H. Cooper, who commanded more than three years, till August 8, 1864, refusing all promotions."

"At Antietam, on the evening of September 16, we advanced with the skirmish line, and with the brave 'Bucktails' opened the battle near the 'East Wood.'

"Next morning and day we were in position on Poffenberger's ridge whereon were thirty guns. Here we shelled and engaged the enemy south of us, towards the Dunker Church, protected the Union right, and repulsed an effort made by the enemy during the afternoon."
(from the Gardner speech)

Initial Strength: 67; Wounded (WIA): 2;
Losses, % of Initial Strength: 3%

Tablet #1: First Army Corps - 16 Sep, 2 PM to 16 Sep, 6 PM
Tablet #15: Meade's Division, First Army Corps - 16 Sep, 2 PM to 16 Sep, 8 PM
Tablet #120: Army of the Potomac - 17 Sep, 5 AM to 17 Sep, 12 PM
Tablet #11: Meade's Division, First Army Corps - 17 Sep, 6 AM to 17 Sep, 9 AM

See a brief unit history, sketched in an 1889 speech by Lt Gardner at the dedication of the Battery's monument on Cemetery Hill at Gettysburg - extracted online.