The nineteenth century has long been considered as the age of nationalism during which different societies across Europe and beyond gave up their regional and social class identities in favor of the national ones or adjusted the former to the latter. However, increasingly more historians call this view into question, drawing attention to individual and collective historical actors who did not think of themselves in ethnic or national terms. This article builds upon the recent scholarship on national indifference in search for a new approach to studying the collective identifications of people, whose sense of belonging has always been a subject of discussions—the Cossacks.