Regiments usually took great care to avoid their colours from falling into the hands of the enemy. During the surrender at Yorktown the colours of the 9th Regiment of Foot were smuggled back to England by their colonel, which was viewed by the Americans as a violation of the terms of the surrender. The colours of the 94th Regiment of Foot were saved during the surrender following the 1880 Battle of Bronkhorstspruit by being hidden beneath the bed of a wounded soldier's wife, in an ambulance allowed to return to British lines. On other occasions the colours have been deliberately destroyed to prevent their capture. The colours of the 51st (2nd Yorkshire West Riding) Regiment of Foot (Light Infantry) were burnt by their colonel at the 1811 Battle of Fuentes de Oñoro when he feared they were at risk of capture and on several occasions regiments threatened with capture while being transported at sea have weighted their colours and thrown them overboard. On some occasions regiments have been offered the right to keep their colours during surrender negotiations, such was the case with the colours of the 4th, 23rd, 24th and 34th regiments of foot who retained their colours after the 1782 surrender of Minorca. Despite the value placed on them colours were sometimes lost off the battlefield, the 71st (Highland) Regiment of Foot (MacLeod's Highlanders) left them at their depot in Britain during the Peninsular War but could not find them upon their return; a light infantry regiment lost one colour in the post during the 19th century.