the British fleet failed to lift the French blockade, resulting in the surrender of an entire British army at Yorktown. The French Revolutionary and Napoleonic Wars (1793–1801, 1803–1814 & 1815) saw the Royal Navy reach a peak of efficiency, dominating the navies of all Britain's adversaries, which spent most of the war blockaded in port. Under Lord Nelson, the navy defeated the combined Franco-Spanish fleet at Trafalgar (1805). Ships of the line and even frigates, as well as manpower, were prioritised for the naval war in Europe, however, leaving only smaller vessels on the North America Station and other less active stations, and a heavy reliance upon impressed labour. This would result in problems countering large, well-armed United States Navy frigates which outgunned Royal Naval vessels in single-opponent actions, as well as United States privateers, when the American War of 1812 broke out concurrent with the war against Napoleonic France and its allies. The Royal Navy still enjoyed a numerical advantage over the former colonists on the Atlantic, and from its base in Bermuda it blockaded the Atlantic seaboard of the United States throughout the war and carried out (with Royal Marines, Colonial Marines, British Army, and Board of Ordnance military corps units) various amphibious operations, most notably the Chesapeake campaign. On the Great Lakes, however, the United States Navy established an advantage. Between 1815 and 1914, the Navy saw little serious action, owing to the absence of any opponent strong enough to challenge its dominance, though it did not suffer the drastic cutbacks the various military forces underwent in the period of economic austerity that followed the end of the Napoleonic Wars and the American War of 1812 (when the British Army and the Board of Ordnance military corps were cutback, weakening garrisons around the Empire, the Militia became a paper tiger, and the Volunteer Force and Fencible units disbanded, though the Yeomanry was maintained as a back-up to the police). Britain relied, throughout the 19th century and the first half of the 20th century, on imperial fortress colonies (originally Bermuda, Gibraltar, Halifax, Nova Scotia, and Malta, though military control on Nova Scotia passed to the new dominion government after the 1867 Confederation of Canada and naval control of the Halifax Yard was transferred to the new Royal Canadian Navy in 1905) as bases for naval squadrons with stores and dockyard facilities. These allowed control not only of the