Sam Cranny-Evans explains how the technology behind the armour, weapons, mobility, and mission systems actually works, as well as how it has got to where it is today. The modern tank is essentially the same concept as the tanks that fought at the beginning of World War II – an armoured vehicle that can take a large gun to where it is most needed and support infantry. However, the technology that they now use is a blend between those things that would have been recognizable 80 years ago – the gun, armour, and tracks – and things that would have been entirely unimaginable, like the 1 million lines of code in an Ajax reconnaissance vehicle, or the uncrewed turret of the T-14 Armata.