We Are One: British surveyor William Brasier prepared this plan after the British gained control of Fort St. Frédéric and nearby Fort Carillon (Ticonderoga) from the French in 1759. Both forts were located near the southern end of Lake Champlain. The French destroyed Fort St. Frédéric when they retreated to Quebec. After rebuilding and renaming it Crown Point, the British advanced to capture Quebec and Montreal. In May 1775, colonial militia seized cannons from Ticonderoga and Crown Point, which were still garrisoned by British troops. They transported the cannons to Boston and positioned them on Dorchester Heights. The move helped force the British to evacuate in March 1776.