Connecticut designated four delegates to the Second Continental Congress who signed the Declaration of Independence: Samuel Huntington, Roger Sherman, William Williams, and Oliver Wolcott. Connecticut's legislature authorized the outfitting of six new regiments in 1775, in the wake of the clashes between British regulars and Massachusetts militia at Lexington and Concord. There were some 1,200 Connecticut troops on hand at the Battle of Bunker Hill in June 1775. In 1775, David Bushnell invented the "Turtle" which the following year launched the first submarine attack in history, unsuccessfully against a British warship at anchor in New York Harbor.