Der Soldat wird ausgehoben, gekleidet, bewaffnet, geübt, er schläft, ißt, trinkt und marschiert, alles nur, um an rechter Stelle und zu rechter Zeit … - Carl von Clausewitz

Force of character leads us to a spurious variety of it — OBSTINACY.

It is often very difficult in concrete cases to say where the one ends and the other begins; on the other hand, it does not seem difficult to determine the difference in idea.

Obstinacy is no fault of the understanding; we use the term as denoting a resistance against our better judgment, and it would be inconsistent to charge that to the understanding, as the understanding is the power of judgment. Obstinacy is A FAULT OF THE FEELINGS or heart. This inflexibility of will, this impatience of contradiction, have their origin only in a particular kind of egotism, which sets above every other pleasure that of governing both self and others by its own mind alone. We should call it a kind of vanity, were it not decidedly something better. Vanity is satisfied with mere show, but obstinacy rests upon the enjoyment of the thing.

Es ist also nach unserer Einteilung die Taktik die Lehre vom Gebrauch der Streitkräfte im Gefecht, die Strategie die Lehre vom Gebrauch der Gefechte zum Zweck des Krieges.

Determination in a single instance is an expression of courage; if it becomes characteristic, a mental habit. But here we are referring not to physical courage but to courage to accept responsibility, courage in the face of a moral danger. This has often been called courage d'esprit, because it is created by the intellect. That, however, does not make it an act of the intellect: it is an act of temperament. Intelligence alone is not courage; we often see that the most intelligent people are irresolute. Since in the rush of events a man is governed by feelings rather than by thought, the intellect needs to arouse the quality of courage, which then supports and sustains it in action. Looked at in this way, the role of determination is to limit the agonies of doubt and the perils of hesitation when the motives for action are inadequate.