From the Greek phalanx to Roman siege engines, pilule plans by Leonardo da Vinci, medicine and the wondrous imagination of H.G. Wells, ed the idea of the armored fighting vehicle – the tank – has crossed centuries and given rise to the technologically advanced land warfare systems that populate the armies of countries large and small today.

First appearing during World War I as unwieldy boxes mounted on tractor chassis and prone to mechanical failure, tank designs evolved into sleek weapons with the now-classic characteristics of speed, mobility, and firepower.

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