There is no other science where judgements are tested in blood and answered in the servitude of the defeated, where the acknowledged authority is the… - Bernard Brodie

Soldiers usually are close students of tactics, but rarely are they students of strategy and practically never of war.

Yet the only empirical data we have about how people conduct war and behave under its stresses is our experience with it in the past, however much we have to make adjustments for subsequent changes in conditions.

Necessity, which frequently exists only in the mind, is less often the mother of invention than of obstinacy, and the obstinacy of those three years exacted from France a penalty which continued to exert its effects over the years, especially in World War II, and which cannot be fully summed up even now.