Prideaux's British Army troops consisted of the 44th and 46th Regiments, and two companies from the 60th, numbering about 2,200 men. He also commanded 2500 provincial militia from New York and 700 from Rhode Island. Delayed by high water on the Mohawk River and the late arrival of some of the provincial companies, the expedition did not begin leaving Schenectady until mid-May. On 27 June the army arrived at Fort Oswego, where they were joined by Johnson and about 600 Iroquois.