a.) Yes, soldiers have to understand their weapons performance and capabilities. So what? Lawrence is just coming to a realisation that most professional officers knew already.

b.) Comparing Haig, with Belisarius is an exercise in futility and shows an very poor understanding of the considerable challenges that Haig faced.

T.E. Lawrence was as much a charlatan and fraud as Liddell-Hart, albeit a possibly brave one. Why give any credence to a discussion of men poorly informed on the subject?