2nd US Artillery Battery M Pennington
Mount Pleasant Township, Adams County, Pennsylvania
Marker Inscription
Army of the Potomac Cavalry Corps First Brigade Horse Artillery Battery M Second U.S. Artillery Six 3 inch Rifles Lieut. A.C.M. Pennington commanding
The Story
This marker records the Gettysburg position of Battery M, 2nd United States Artillery — horse artillery of the Cavalry Corps' First Brigade, fielding six 3-inch rifles under Lieutenant A.C.M. Pennington. In July 1863 these fast, mobile guns rode with Union cavalry on the flanks of the battlefield, screening the army and dueling Confederate horsemen far from the main infantry lines. Pennington's battery became one of the better-known horse-artillery commands of the war.
Why it matters
It marks where mobile horse artillery guarded the flanks at Gettysburg, the Civil War's decisive battle.
The story behind this marker
AI contextThe era
In July 1863 the Civil War surged onto Northern ground. Robert E. Lee marched his army into Pennsylvania, gambling that a victory there might break the North's will to keep fighting; the Union's Army of the Potomac raced to meet him. They collided at Gettysburg, and over three days turned the countryside of Adams County into the largest battlefield in American history.
This marker stands in Mount Pleasant Township, out toward the wider reaches of the field where cavalry and their guns ranged well beyond the main infantry lines. Here the fighting was more fluid — fast, mounted, and spread across open country rather than locked along a single ridge.
The monument belongs to that mobile edge of the battle, where speed and maneuver mattered as much as the weight of massed infantry.
People & events
The tablet records Battery M of the 2nd United States Artillery — horse artillery of the First Brigade attached to the Cavalry Corps, serving six 3-inch rifles under Lieutenant A.C.M. Pennington.
Horse artillery was built for movement. Unlike ordinary field batteries, where some crewmen walked, in the horse artillery every man was mounted, so the guns could gallop alongside the cavalry and keep up with their swift, ranging operations. The idea was to bring firepower wherever the fast-moving troopers needed it, then relocate before the enemy could fix its aim.
Armed with dependable, long-ranged 3-inch rifles and served by disciplined regulars, Pennington's battery was well suited to the duel of guns and horsemen that swirled around the army's flanks. Batteries like his screened the army, contested the movements of Confederate cavalry, and lent hard-hitting support far from the crowded center of the field — the kind of work that earned the Cavalry Corps' horse artillery a strong reputation.
Its place in the American story
Gettysburg was the war's great turning point. Lee's second and last major invasion of the North was repulsed here, and after the summer of 1863 the initiative in the East never returned to him. The battle is rightly remembered for its climactic infantry assaults — but those clashes were framed and protected by the cavalry and horse artillery working the flanks.
Mounted operations kept an army from being surprised or outflanked. Screening the movements of tens of thousands of men, watching the roads, and dueling the enemy's horsemen were essential tasks, and horse artillery gave that mobile arm real striking power. Without it, the flanks of the army were far more vulnerable.
A marker set out here, away from the famous center, preserves that wider truth about how battles were actually won. It reminds visitors that the decisive fight had edges as well as a center, and that fast guns and fast riders helped hold them.
If you visit
This marker rewards travelers willing to venture toward the outer parts of the battlefield. Out here the country opens up, and it's easier to picture mounted columns and galloping guns than the shoulder-to-shoulder lines of the battle's core.
Stand by the position and imagine the tempo of horse artillery: crews riding hard into place, wheeling their 3-inch rifles around, firing, then limbering up to move again. This was a war of speed and open ground, very different in feel from the fixed firing lines elsewhere on the field.
Worked into a longer driving tour, a stop like this broadens the whole story. After the crowded, famous landmarks, the flank positions give you room to breathe and a fuller sense of just how far the fighting at Gettysburg really reached.
Written by AI to add context, grounded in the marker’s inscription and the historical record. The inscription above is the original, unaltered text.
Plan your visit
NearbyMake a day of it — museums, food, and places to stay near this marker.
Museums & culture
- Gettysburg Battlefield Preservation Association2.1 mi away
- Ford Motor Company Fund Education Center3.0 mi away
- Battlefield Military Museum3.0 mi away
- Gettysburg Museum3.1 mi away
- Casteel Sculptures3.3 mi away · 789 Baltimore Street, Gettysburg, PA
- Jennie Wade House Gifts3.3 mi away · 548 Baltimore Street, Gettysburg, PA
Attractions
- John Eisenhower Bridge5.5 mi away · Waterworks Road
- Sachs Covered Bridge5.9 mi away
- Sachs Covered Bridge5.9 mi away · Waterworks Road, Gettysburg, PA
Food & drink
- Li's Buffet3.2 mi away · 165 York Street, Gettysburg, PA
- Mason Dixon Distillery3.2 mi away · 331 East Water Street, Gettysburg, PA
- Reid's Winery Cider House3.3 mi away · 400 Baltimore Street, Gettysburg, PA
- Chinatown Kitchen3.3 mi away · 25 York Street, Gettysburg, PA
- Upper Crust Pizza3.3 mi away · 19 York Street, Gettysburg, PA
- Borough BBQ3.4 mi away · 15 York Street, Gettysburg, PA
Places to stay
- Wyndham2.0 mi away · 95 Presidential Circle, Gettysburg, PA
- Courtyard Gettysburg2.0 mi away · 115 Presidential Circle, Gettysburg, PA
- City Express2.2 mi away · 1857 Gettysburg Village Drive, Gettysburg, PA
- Sleep Inn and Suites2.2 mi away · 1650 York Road, Gettysburg, PA
- Hampton Gettysburg2.5 mi away · 1280 York Road, Gettysburg, PA
- Hilton Garden Inn2.5 mi away · 1061 York Road, Gettysburg, PA
Places data © OpenStreetMap contributors. Hours and details change — call ahead.
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Related people
- · Lieutenant A.C.M. Pennington
Related events
- · Battle of Gettysburg
Themes & tags
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