No single individual is credited with inventing the modern battle tank. Leonardo Di Vinci and H.G. Wells are both considered to have envisioned the armored fighting vehicle, but neither constructed such a device. The first tanks were born from simultaneous international military evolutions.
In 1915, England was the first country to successfully build a tracked, armored and armed vehicle. A committee was formed by British military authorities to create a land-based equivalent of the naval battleship. The design began with a civilian tractor to which armor and weapons were added. The early prototypes gave way to the first fielded tank, the Mark I.