To the extent that a field is defined by job postings, I find this advertisement fascinating:
US History/Cultural History. The Department of History at the University of Wisconsin-Stevens Point seeks applications for a tenure track, assistant professorship in the field of US History with a specialization in US Cultural History. The ability to teach courses in one or more of the following Cultural History areas is highly desirable: American West, borderlands, military, intellectual. The successful candidate will be expected to teach ….