This is why “fortitude,” rather than “courage,” is the proper word to describe what is occurring here. It is not just a reaction to fear, but rather a reaction to a host of stressors that suck the will and life out of a man and leave him clinically depressed. The opposite of courage is cowardice, but the opposite of fortitude is exhaustion. When the soldier’s well is dry, his very soul is dry, and, in Lord Moran’s words, “he had gazed upon the face of death too long until exhaustion had dried him up making him so much tinder, which a chance spark of fear might set alight.”

