Colin Powell served two tours of duty in Vietnam, spending his first tour as the sole American soldier embedded with ARVN troops along the border with Cambodia. As he writes about the experience, he stood tall and was the first target the Viet Cong would see in his marching column. He displayed courage and the ability to be a good camper when the situation demanded. Powell is a person of optimism. In My American Journey he writes,
There is no end to what you can accomplish if you don’t care who gets the credit.
Experts often possess more data than judgment; Elites can become so inbred … that they bleed to death as soon as they are nicked by the real world.
Powell is known for his 13 rules of personal and professional conduct that you can read here.