Alternatively, courage may result from such positive motives as ambition, patriotism, or enthusiasms of any kind. In that case courage is a feeling, an emotion, not a permanent state. There is more reliability in the first kind, more boldness in the second. The highest kind of courage is a compound of both. If we pursue the demands that war makes on those who practice it, we come to the region dominated by the powers of intellect.
War is the realm of uncertainty.
If we consider them together, it becomes evident how much fortitude of mind and character are needed to make progress in these impeding elements with safety and success. According to circumstance, reporters and historians of war use such terms as energy, firmness, staunchness, emotional balance, and strength of character. Even with the violence of emotion, judgment and principle must still function like a ship's compass, which records the slightest variations however rough the sea. To bring a war, or one of its campaigns, to a successful close requires a thorough grasp of national policy. Naturally moral strength must not be excluded, for psychological forces exert a decisive influence on the elements involved in war.