William Wordsworth said this quote

...The happy Warrior... is he... who, doomed to go in company with pain, and fear, and bloodshed, miserable train turns his necessity to glorious gain; in face of these doth exercise a power which is our human nature's highest dower: controls them and subdues, transmutes, bereaves of their bad influence, and their good receives: by objects, which might force the soul to abate her feeling, rendered more compassionate; is placable— because occasions rise so often that demand such sacrifice; more skillful in self-knowledge, even more pure, as tempted more; more able to endure, as more exposed to suffering and distress; thence, also, more alive to tenderness.