During the American Revolutionary War, Lieutenant Ezra Lee undertook a bold mission utilizing the Turtle, a functional submarine designed by David Bushnell. This vessel aimed to infiltrate enemy waters to attach a time bomb to the British ship HMS Eagle, which lay anchored in New York Harbor. The Turtle represented one of the earliest explorations into underwater combat and maritime technology, showcasing the inventive spirit of American forces seeking to counter British naval superiority.

In preparation for the operation, Lee and his team faced numerous challenges, including the difficulties of navigating underwater and the lack of training in submarine operations, which were unprecedented at the time. The Turtle was a hand-powered, egg-shaped submarine that allowed for limited maneuverability and visibility. Lee's endeavor was significant because it illustrated the shift from traditional warfare tactics to incorporating new technology and strategies that could potentially turn the tide in favor of the revolutionary forces.

Although Lee managed to approach the HMS Eagle, records indicate he was ultimately unsuccessful in his mission to attach the explosive device. This failure was not documented in British accounts, leading to historical ambiguity regarding the event's impact. Despite the lack of success, Lee's attempts in the Turtle laid the groundwork for future developments in naval warfare and submarine technology, highlighting an early instance of using submersible vessels in military conflict.