Author Archive

Clausewitz discussed my favorite topic, Military Genius, in Book I, and I wrote an amplification of that subject. In the intervening books, Books II-VII, Clausewitz scarcely touches on the subject, but briefly returns to it in Book VIII.
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Chapter Four of Book V of On War is titled “Relationship between the Branches of the Service.” This chapter, however, doesn’t really seek to explain the relationship between the branches (infantry, artillery, and cavalry). Instead, it seeks to explain the relative strengths and weaknesses of the three branches. The specific relationships between the branches are left for us to intuit.

Clausewitz explains the strengths right off:

“The engagement consists of two essentially different components: the destructive power of firearms, and hand-to-hand, or individual, combat. The latter in turn can be used for either attack or defense (words here employed in an absolute sense, for we are speaking in the broadest of terms). Artillery is effective only through the destructive power of fire; cavalry only by way of individual combat; infantry by both these means.

In hand-to-hand fighting, the essence of defense is to stand fast, as it were, rooted to the ground; whereas movement is the essence of attack. Cavalry is totally incapable of the former, but preeminent in the latter, so is suited only to attack. Infantry is best at standing fast, but does not lack some capacity to move.” (p.285)

Clausewitz then enumerates his thoughts on the combat arms:

“1. Infantry is the most independent of the arms.
2. Artillery has no independence.
3. When one or more arms are combined, infantry is the most important of them.
4. Cavalry is the most easily dispensable arm.
5. A combination of all three confers the greatest strength.” (p.286)

And so Clausewitz starts beating around the Combined Arms bush.

But what is Combined Arms?
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Last week Lexington Green and I wrote on the virtues intrinsic to military genius. These virtues were categorized as intellectual, or psychological, or both. The truths revealed came from Chapter 3, Book I of On War.

Book II of On War attempts to serve as bedrock to the theory of war, and in doing so, provides a guide to the kinds of knowledge that belongs in the intellect of the military genius. Book II also explains how that knowledge ought to be learned, and used, and ultimately the intellectual style of the military genius. This supplements the lengthy treatment I gave to psychological, emotional, and moral factors that help describe the military genius.

How does the commander go about learning what he must? What is his intellectual style and what are his habits? What must he learn? How must he learn it? Should have be a disinterested third party with respect to his knowledge? Must he internalize his military knowledge? Is his knowledge derived mainly from experience, or from study? What are the pitfalls of the intellectual methods of the military mind?

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I am reading Clausewitz because I fight as a profession. It is therefore my duty to heed my obligation to society that I read and understand my craft. Clausewitz, whether one agrees with him or not, has shaped the doctrine of all modern state-owned militaries. The capstone doctrinal document of the Marines, MCDP 1: Warfighting, is laced with Clausewitzian thought and terminology. Ask any Marine lieutenant what Friction is. He almost certainly knows!

On my road to professionalism I have wondered what makes a person a genius at the military arts and sciences. Fortunately Clausewitz provided me the Third Chapter of Book One of On War, where he dissects military genius into its component parts and discusses them. In doing so he provides a great starting point to discuss the nature of military genius. What is military genius? Where does it come from? What kinds of people are military geniuses? Do we make geniuses, or are they born?

Here I will digest the chapter and provide my thoughts, as well as questions for the Round Table.

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