No one knows the exact number of Americans soldiers who fought in the Battle of Long Island, but estimates are that there were at least 10,000. It is also estimated that 1,407 Americans were wounded, captured, or missing, and 312 were killed.
There were 22,000 British and Germanss (including 9,000 Hessian mercenaries) on Long Island, and they had a total loss of 377. Five British officers, and 56 men were killed, while 13 officers, and 275 men were wounded or missing. Two Germans were killed, and three officers and 23 men were wounded.
On August 30, 1776, the Americans evacuated Long Island and crossed to Manhattan. General George Washington was the general in charge. Washington told a young patriot named Nathan Hale to go undercover as a Dutch schoolteacher to gather intelligence about the British. He completed the mission successfully, but after doing so, on September 21st, Nathan was caught and hanged. The British, under Sir William Howe, laid siege and Washington, seeing the position was hopeless, evacuated his army to Manhattan.
According to both posession of the disputed territory and casualties, the British won this battle. The British occupied Long Island until 1784.