Bureaucrats are important symbols of the governments that employ them. Contrary to popular stereotypes, they determine much about the way policy is ultimately enacted and experienced by citizens. While we know a great deal about bureaucrats and their actions, we know little about their development. Are particular types of people drawn to government work, or are government workers forged by the agencies they work in? Put simply, are bureaucrats born, or are they made?

In Becoming Bureaucrats, Zachary W. Oberfield traces the paths of two sets of public servants--police officers...