Fort Frontenac was also regarded as a threat to Fort Oswego, which was built by the British across the lake from Fort Frontenac in 1722 to compete with Fort Frontenac for the Indian trade, and later enhanced as a military establishment. General Montcalm had already used Fort Frontenac as a staging point to attack the fortifications at Oswego in August 1756. The British also hoped that taking the well-known fort would boost troop morale and honour after their demoralizing battle defeat at Fort Ticonderoga (Fort Carillon) in July 1758.