In the library catalog, books, videos and other materials are assigned Library of Congress (LC) subject headings based on their content. Here is a sample list of film-related subject headings, some of which pertain equally to books and videos (visual materials). When you view catalog records in discoverE, these subject headings display as active links pointing to other items with the same subject.
This is not an exhaustive list of subject headings relevant to scope of this course, but it illustrates how subject headings are structured and what kind of language they typically use.
War films -- United States -- History and criticism (Limits focus to war films produced in the United States)