Conflicts thumb|left|Wyoming Valley in 1778: Battlefield of Wyoming (G); Plymouth Township is visible on the left thumb|Plymouth Township in 1864; Ross Hill is visible on the right From 1769 to 1785, the Connecticut settlers in Plymouth were harassed on a regular basis by the Pennamites, Native Americans, and Tories. A series of clashes, which were part of the Revolutionary War and the Pennamite-Yankee Wars, occurred between the multiple parties. During the Revolutionary War, the settlers erected a small fortification on "Garrison Hill," in the lower portion of modern-day Plymouth Borough. The fort saw action in defending the colonists from Native American raids.
Conflicts thumb|left|Wyoming Valley in 1778: Battlefield of Wyoming (G); Plymouth Township is visible on the left thumb|Plymouth Township in 1864; Ross Hill is visible on the right From 1769 to 1785 the Connecticut settlers in Plymouth were harassed on a regular basis by the Pennamites, Native Americans, and Tories. A series of clashes, which were part of the Revolutionary War and the Pennamite-Yankee Wars, occurred between the multiple parties. During the Revolutionary War, the settlers erected a small fortification on "Garrison Hill," in the lower portion of modern-day Plymouth Borough. The fort saw action in defending the colonists from Native American raids.