“'Fitness' is a commonly used word in our society today but within the military it has a particularly deep meaning. Conventionally, being fit means being adapted to a particular condition or circumstance. In war, militaries and their individual combatants must adapt to the chaos and complexities of battle. As these militaries return from war, they must maintain a state of vigilance while also peacefully coexisting within the civil society that produced them. " (Admiral McMullen, USN (Ret))