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In August, 1814, General Prevost with 14,000 men and a flotilla of sixteen vessels advanced from the St. Lawrence to attack the American land force entrenched at Plattsburgh and the fleet on Lake Champlain. The American land force consisted of 3500 troops and about 4000 militia, under General Macomb. The naval force was made up of fourteen vessels, commanded by Captain Macdonough. The British army on September 5 was eight miles away. The next day it advanced in two columns, but was held partly in check by the American militia. On reaching the north bank of the Saranac General Prevost constructed works and on the eleventh tried to force his way across in two places. At the same time the two fleets fought desperately for over two hours in Plattsburgh Bay. This ended with the defeat of the British, who lost about 200 men and the commodore of the fleet. The news of this victory came to the fighting armies at the critical part of the battle and turned the tide in favor of the Americans. The British fled to Champlain, leaving behind the sick and wounded and a vast amount of stores. On September 24 they returned to Canada, having lost in all, killed, wounded, missing and deserters, nearly 2000 men. The American loss in the land battle was 150.