In the wake of their excellent series on both US light tanks and tank destroyers that saw service during WWII, comes news that the National Museum of Military Vehicles has produced yet another video — this one dealing with the Pershing heavy tank. The discussion traces the evolution of the so-called T-20 series of heavier tanks and why it took so long for it to enter combat towards the latter stages of the Second World War. Designed, in effect, to deal with some of the latest German tanks, and running contrary to US military doctrine of the time, the Pershing arrived just as US forces were entering Germany proper, only to be parceled out to a couple of US armored divisions. They proved successful nonetheless, and demonstrated why they were needed when most war planners had considered the war won and the Sherman a war winner.