
https://www.amazon.com/Great-Captains-Unveiled-Liddell-Hart/...
> Though unknown to the west for many centuries, Subutai's exploits were first featured by the British military theorist B. H. Liddell Hart in his book Great Captains Unveiled after World War I. Liddell Hart used the example of the Mongols under Genghis and Subutai to demonstrate how a new mechanized army could ideally fight using the principles of mobility, dispersion, surprise, and indirect means. Though he gained little support in Britain, Liddell Hart's books were read in Germany, whose armies during the initial 1940–41 invasions of France and Russia bore an astonishing similarity to the campaigns of Subutai, 700 years earlier. In particular, Erwin Rommel and George Patton were avid students of Mongol campaigns