Tanks and Heavy Artillery covers heavy artillery, from the first cannon invented by the Chinese to the big guns of World War I and beyond; and tank design, including an early drawing by Leonardo da Vinci, the first armoured vehicles that got stuck in the mud, and the British Mark 1 and US Abrams tanks. We hear stories from the crews, see how these mighty machines are operated, and follow them in action at the World War II battles of El Alamein and Kursk.