85th Redoubt
Plymouth, Washington County, North Carolina
Marker Inscription
85th Redoubt. Union fort built by the 85th New York Regiment. It was taken on April 18, 1864, in one of the heaviest assaults of the siege.
Erected by North Carolina Department of Cultural Resources
The Story
This earthwork fort, thrown up by the 85th New York Regiment, anchored part of the Union defensive ring around Plymouth. On April 18, 1864, it fell in one of the fiercest assaults of the three-day siege. Its capture helped unravel the town's outer defenses ahead of the final Confederate attack two days later.
Why it matters
The redoubt is a tangible reminder that far-northern regiments like the 85th New York fought and died deep in the Carolina lowlands, and that field fortifications were central to Civil War coastal warfare.
The story behind this marker
AI contextThe era
By the spring of 1864, the Civil War had become a grinding contest for control of the coastal South. The sounds and rivers of eastern North Carolina were strategic prizes — shallow, winding waterways that let the Union navy push inland and squeeze Confederate supply lines. Plymouth, sitting near where the Roanoke River runs down toward Albemarle Sound, was one of those prizes, and Federal troops had held it for roughly two years.
Holding it meant digging in. The flat, wet country around the town offered almost nothing in the way of natural defenses, so the soldiers built their own. They raised a ring of earthen forts linked by trenches to guard the roads and the river approaches. This redoubt was one link in that chain — a mound of shoveled earth meant to stop men and slow cannon.
In that era, a well-built earthwork could be worth more than a stone wall. Packed soil absorbed artillery fire, and a ditch and parapet forced attackers to climb into the defenders' guns. Warfare on this coast was as much about spade and axe as it was about musket and blade.
People & events
This fort still carries the name of the regiment that raised it: the 85th New York. These were men recruited far to the north, now standing guard over a river town deep in the Carolina lowlands — a long way from home, in country that must have felt like another world.
Building a work like this was brutal labor: timber, sweat, and endless shovelfuls of heavy soil. And the men who dug an earthwork were often the same ones later asked to bleed for it.
In mid-April 1864, the Confederates came for Plymouth in strength, and the fighting here was among the heaviest of the multi-day siege. On April 18, the redoubt was stormed and taken. Its fall tore open part of the Union defensive ring and helped set up the collapse of the town's remaining defenses two days later.
Its place in the American story
Plymouth is a reminder that the Civil War was not fought only on the famous fields of Virginia and Pennsylvania. It reached into small river towns most Americans have never heard of, where the outcome still mattered — because whoever controlled the water controlled the region.
The redoubt also captures something true of the whole war: that ordinary soldiers reshaped the land itself, turning farm fields and roadsides into fortifications with their own hands. These earthworks were a signature of the conflict, foreshadowing the trench warfare that would define wars to come.
And it speaks to how far men traveled to fight. A regiment raised in New York gave its labor and, for many, its freedom or its life on ground hundreds of miles south. When a garrison like this was overwhelmed, the survivors typically faced long captivity — a hard fate that many Union prisoners taken in this campaign came to know.
If you visit
Come to this spot expecting quiet rather than spectacle. Time and weather soften earthworks, so what was once a sharp-edged fort may now read as a low, grassy rise. Let your eye follow the lay of the land instead of looking for a monument.
Stand where the defenders stood and picture the fields of fire — the open ground an attacker would have had to cross, uphill, into waiting guns. That geography is the story here; the shape of the ground is the primary source.
Plymouth makes a rewarding stop on a slow drive through eastern North Carolina's river country. Pair this marker with the other Battle of Plymouth sites nearby to trace how the siege unfolded, and give yourself a moment to remember the northern farm boys who dug into this southern soil.
Written by AI to add context, grounded in the marker’s inscription and the historical record. The inscription above is the original, unaltered text.
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Related events
- · Battle of Plymouth
Themes & tags
Nearby & related markers
Hoke's Final Line
Plymouth, NC
On April 20, 1864, the three-day Battle of Plymouth reached its climax as Confederate forces closed in on the Union-held river town near Albemarle Sound. This spot marks the extreme left flank of General Robert F. Hoke's brigade as it formed just before the decisive assault. Hoke's coordinated attack, aided by the ironclad ram CSS Albemarle on the Roanoke River, forced the surrender of the garrison.
Fort Williams
Plymouth, NC
Fort Williams was the principal Union stronghold at Plymouth, named for General Thomas Williams. As the Confederate assault of April 1864 collapsed the surrounding works, the garrison fell back to this fort, which held out until it too surrendered on April 20. Its capitulation ended the battle and handed the town to Confederate forces.
Union Earthworks at Plymouth
Plymouth, NC
The main line of Union defenses during the Battle of Plymouth ran across the road at this point from April 17 to 20, 1864. Dug earthworks like these, bristling with artillery, were meant to hold the river town against any land approach. They were ultimately overrun when Confederate forces pressed the assault on all sides.
CSS Ram Albemarle
Plymouth, NC
The Confederate ironclad ram Albemarle, commanded by James W. Cooke, helped Confederate forces recapture the river town of Plymouth in the spring of 1864. The powerful vessel dominated the Roanoke River until a daring Union raid sank her; she went down about 600 feet north of here on October 27, 1864. Her loss reopened the region to Union control.