Bradstreet assembled an army at Schenectady consisting of just 135 regular army troops and about 3,500 militia, drawn from the provinces of New York, Massachusetts, New Jersey, and Rhode Island. By the time his army reached the ruins of Fort Oswego on August 21, Bradstreet had lost 600 men, primarily to desertion. The trek met with minimal opposition from French and Indian raiding parties, but the route to Oswego, which had been virtually unused since 1756, was overgrown, and some of the waterways had silted up, causing heavily laden bateaux to ground in the shallow waters. Bradstreet's flotilla of bateaux crossed Lake Ontario, landing without opposition about one mile (1.6 km) from Fort Frontenac on August 25.