Benedict Arnold spent approximately twelve days here in September 1776 while preparing an improvised American fleet for operations on Lake Champlain. The vessels under construction and repair were intended to delay a British invasion from Canada. Arnold’s work led directly to the Battle of Valcour Island in October, one of the Revolution’s most important strategic delaying actions despite its tactical defeat.

After American forces retreated from Canada in 1776, British commander Guy Carleton prepared to move south along the Lake Champlain–Hudson corridor. Control of the lake was essential. An army could not easily advance with artillery and supplies while an enemy fleet threatened its transports. Both sides therefore raced to build warships in the wilderness.

Arnold brought maritime experience, energy, and impatience to the project. American carpenters, sailors, soldiers, and laborers constructed gondolas, galleys, schooners, and other vessels with limited tools and materials. Guns had to be mounted, crews recruited and trained, ammunition gathered, and provisions loaded. Many sailors had little naval experience. Arnold inspected work, issued orders, corresponded about shortages, and planned how to use an inferior fleet against the British.

He chose a position in the narrow channel beside Valcour Island, forcing the British to approach in confined waters on October 11. The battle lasted for hours and inflicted damage on both sides. The American fleet suffered heavily. During the night Arnold led surviving vessels past the British line, but pursuit resumed, and he eventually beached and burned several ships to prevent capture. The remnants escaped toward Crown Point and Ticonderoga.

Measured solely by ships lost, Valcour Island was a British victory. Strategically, however, the American resistance consumed precious time. Carleton advanced only as far as the Ticonderoga area before withdrawing to Canada for the winter. The delay gave the Americans another year to prepare. When Burgoyne launched the next invasion in 1777, he encountered stronger resistance and ultimately surrendered at Saratoga.

The marker identifies Arnold’s preparatory presence rather than the battle site itself, which lies on the lake. Its significance is the planning, shipbuilding, and command work conducted before combat. Naval campaigns begin in workshops, supply yards, and temporary headquarters long before cannon fire.

Arnold’s later treason complicates memory of the site but does not erase his 1776 service. At this moment he was one of the Patriot cause’s most capable and daring officers. The twelve days commemorated here contributed to a naval stand that protected the northern frontier and helped shape the timetable leading to Saratoga and the French alliance.