lost a leg and part of his thigh in the action while his remaining arm was rendered "permanently motionless". The Americans lost 27 killed and 96 wounded, of whom 2 later died. The heaviest American casualties were suffered aboard Lawrence, which had 2 officers and 20 men killed, and 6 officers and 55 men wounded. Of the vessels involved, the three most battered (the American brig Lawrence and the British ships Detroit and Queen Charlotte) were converted into hospital ships. A gale swept the lake on 13 September and dismasted Detroit and Queen Charlotte, further shattering the already battered ships. Once the wounded had been ferried to Erie, Lawrence was restored to service for 1814, but the two British ships were effectively reduced to hulks. Aftermath Perry's vessels and prizes were anchored and hasty repairs were underway near West Sister Island when Perry composed his now famous message to Harrison. Scrawled in pencil on the back of an old envelope, Perry wrote: Perry next sent the following message to the Secretary of the Navy, William Jones: Once his usable vessels and prizes were patched up, Perry ferried 2,500 American soldiers to Amherstburg, which was captured without opposition on 27 September. Meanwhile, 1,000 mounted troops led by Richard Mentor Johnson moved by land to Detroit, which also was recaptured without fighting on or about the same day. The British army under Procter had made preparations to abandon its positions even before Procter knew the result of the battle. In spite of exhortations from Tecumseh, who led the confederation of Indian tribes allied to Britain, Procter had already abandoned Amherstburg and Detroit and began to retreat up the Thames River on 27 September. Lacking supplies, Tecumseh's Indians had no option but to accompany him. Harrison caught up with Procter's retreating force and defeated them on 5 October at the Battle of the Thames, where Tecumseh was killed, as was his second-in command and most experienced warrior, Wyandot Chief Roundhead. The victory on Lake Erie had disproportionate strategic import. The Americans controlled Lake Erie for the remainder of the war. This accounted for much of the Americans' successes on the Niagara peninsula in 1814 and also removed the threat of a British attack on Ohio, Pennsylvania, or Western New York. However, an expedition in 1814 to recover Mackinac Island on Lake Huron failed, and the Americans lost eight of their smaller vessels and