The worth of dialogue with people who come from other cultural traditions was the first important discovery of the ambulance drivers at the front. It led them to care for the wounded on all sides in the war and then to create university exchanges between France and the United States. The practice of intercultural dialogue is the first training experience that is offered today to the students who leave home and to the families who receive them in their homes as new children for long periods of time. As this story unfolds, it is perhaps the border that emerges as something to question – the political borders that the American Field Service ambulance drivers crossed in two world wars, and the cultural and ideological borders overcome by students, schools, and families that answered the call of AFS.