On 19 August 1812, lookouts of the British frigate HMS Guerriere spotted the American frigate, USS Constitution. Captain James Dacres, Guerriere's commander, was eager for a fight and confident of victory. He had the weight of Britain's naval reputation and confidence behind him. Yet when the guns fell silent Guerriere was a shattered hulk and Dacres had struck to Constitution. By the year's end, three British frigates and two sloops had been defeated in single ship actions against American opponents, throwing the British naval sphere into a crisis. These losses could not have been more shocking to the Royal Navy and the British world. In a strange reversal, the outnumbered British Army along the Canadian border had triumphed but the tiny United States Navy had humiliated the world's largest and most prestigious navy. Further dramatic sea battles between the two powers followed into early 1815, and the British tried to reconcile the perceived stain to the Royal Navy's honour.