The Sullivan Expedition Against the Iroquois Indians - Fort Augusta - PLAQUE
Sunbury, Northumberland County, Pennsylvania
Marker Inscription
First selected as rendezvous for Sullivan Expedition Lt. Col. Adam Hubley's Command. The only regiment quartered here to march against the Six Nations.
Erected by Pennsylvania Historical and Museum Commission
The Story
Fort Augusta, guarding the forks of the Susquehanna at Sunbury, was first chosen as a rendezvous for the Sullivan campaign. From here Lt. Col. Adam Hubley's regiment — the one unit quartered at the fort — marched to join the offensive against the Six Nations in 1779. The old fort thus became one of several launching points feeding troops into the larger expedition.
Why it matters
A key Susquehanna stronghold, Fort Augusta shows how frontier forts built for defense became springboards for the Revolution's westward campaigns.
The story behind this marker
AI contextThe era
Where the branches of the Susquehanna River meet, at present-day Sunbury, the colonial frontier once bent around a strategic point. Rivers were the highways of early Pennsylvania, and the forks of the Susquehanna were a natural crossroads — which is exactly why a fort was built there to guard the region.
By 1779, that fort had become a key strongpoint in a frontier at war. The Revolution had reached deep into this country, and the same features that made the site valuable in peacetime — its command of the rivers, its ability to shelter and supply troops — made it valuable in war. A fort built for defense was well placed to become something more.
That year, as a major campaign against the Six Nations of the Iroquois took shape, this stronghold was drawn into the plan. It was first chosen as a gathering point, a place where forces could assemble before setting out. The marker records that role: the fort as a starting line for part of the larger offensive.
People & events
The figure named here is Lieutenant Colonel Adam Hubley, whose command was quartered at the fort — the one regiment stationed there to march against the Six Nations. From this place his men set out to join the wider campaign, adding their column to the several that fed into the offensive.
Picture the fort in that season: a working military post, suddenly a rendezvous, its yard and outbuildings pressed into service to hold and equip a regiment preparing to move. The order to march transformed a defensive garrison into a point of departure, and the soldiers who had guarded the forks now turned outward toward the wilderness.
The plaque's careful wording matters — this was the only regiment quartered here to make that march. It tells us the fort was one contributor among many to a campaign assembled from scattered forces, each starting from its own post and converging toward a common objective.
Its place in the American story
Fort Augusta illustrates a pattern that runs through the whole story of the American frontier: forts built to defend a line of settlement often became the springboards for campaigns that pushed that line outward. Defense and expansion were two faces of the same structure.
The campaign this fort helped launch carried the Revolution into the heart of the Iroquois Confederacy, with lasting and grievous consequences for the Six Nations. A site like this asks us to remember both dimensions honestly — the strategic ingenuity of using river forts as staging grounds, and the heavy toll the resulting campaign took on Native peoples.
As a guardian of the Susquehanna and a rendezvous for troops, the fort connects a single Pennsylvania river junction to one of the Revolution's most consequential frontier operations. It stands for the way local strongholds became instruments of a much larger national effort.
If you visit
Come for the setting as much as the plaque. This is a place shaped by water — the forks of the Susquehanna — and understanding why a fort stood here is easiest when you can see how the rivers come together. Let the geography explain the history.
The marker commemorates a fort that served first as a shield and then as a gateway, so look for that dual character in whatever remains and in the lay of the land. Imagine a regiment mustering here, then marching off toward a distant campaign, and the quiet river junction takes on a different weight.
Read the plaque and give a thought to Lieutenant Colonel Hubley's men who set out from this ground. It makes a natural anchor for exploring the Sunbury area, where the meeting of the river branches still tells you, at a glance, why this spot mattered.
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 people
- · Lt. Col. Adam Hubley
Related events
- · Sullivan Expedition of 1779
Themes & tags
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