S.L.A. Marshall Quote
The basic theme is elementary and should be beyond argument: No logistical system is sound unless its first principal is enlightened conservation of the power of the individual fighter. The second theme, in 1949 a radically new idea, as yet unsupported by incontrovertible scientific proof, is that sustained fear in the male individual is degenerative as prolonged fatigue exhausts body energy no less.
The Soldier's Load and the Mobility of a Nation (1950)
