The Rise and Fall of the Elite War Production

Tyler: We have gathered now close to 200 cases of past societies relating into crisis. And elite war production is essentially a universal feature of the pre-crisis period. When you get too many elites and they start fighting amongst themselves, so the societies become dysfunctional in this right into crisis. So can you give some examples of elite overproduction which has led to a revolution of civil war? Yes, let's take medieval England if you would.