The light that came on for me with reading this quote was that not all men/women are or want to be warriors in daily life they just want to get by, to the warrior those just wanting to get by are weak.
A warrior is not proven only in combat, but also in life. He lives by a code, not because codes are "honorable" or a fad, but because that is how a warrior thinks and so it is how he lives. Combat is an extension of that code, not the source. The rigidity of military discipline reflects his mindset and the two feed off each other, the man strengthened by the military and the military strengthened by the man. His code in peacetime is the same as that in the military: do your duty, protect the weak, protect the community, face the bully, stand tall, stay aware, think ahead, be ready, be loyal, avoid aggression if possible and, if not, win and win fully. Respect and honor are earned by actions, not granted by birth. There are a thousand military codes spread throughout history, but I believe they all say the same thing at heart: Live with honor, and let not your death be born by the pallbearers of disgrace, cruelty, weakness, and fear.