Curtis had rescued a further 357 officers and men, who thus became prisoners, while in the siege lines more casualties brought up the allied total to 1,473 men for the Grand Assault, with all ten floating batteries destroyed. The engagement was the fiercest battle of the American Revolutionary War. The British lost 15 killed and 68 men were wounded, nearly half of them from the Royal Artillery. A Royal Marine who had taken "Pastora"'s large Spanish colour later presented it to Elliot.