Waldo Heinrichs is Dwight E. Stanford Professor Emeritus at San Diego State University. He is the author of American Ambassador: Joseph C. Grew and the Development of the United States Diplomatic Tradition, which won the Allan Nevins Prize. Heinrichs served as an infantryman in the U.S. Army's 86th Division, one of the last two divisions to be deployed to Europe in World War II and the first to be redeployed to the Pacific in preparation for the invasion of Japan. He and his wife live in South Hadley, Massachusetts.