Two quotes I don't want to misplace.

The sole reason for employing men who have made war their profession is the presumption that by training they have acquired a mastery of their art. Anyone with sufficient authority or inspiration can lead or push men into battle, especially if he is furnished with technically trained assistants who can help him to regulate the marshaling of forces in the movement and fire. For this shepherding of sheep to the slaughter, perhaps artful but essentially inartistic, is a practiced demagogue would have a definite superiority over the tongue-tied professional warrior. But the custom of employing a professional is based on the idea that through art he will be able to obtain more profit at less cost.
Pages 271/272, "The Real War, 1914-1918" Captain B.H. Liddell Hart

"Only when the military machine itself begin to crumble could the slaves of the machine free themselves from the grip, or propaganda help them loosening it. Perhaps only then did an active will to peace reenforce their mere passive weariness of war. The inner strength of militant patriotism lies in the fact that it is not merely a gag but a drug."
Page 320, "The Real War, 1914-1918" Captain B.H. Liddell Hart