In his Heretical Essays, Jan Patočka introduces the concept of the solidarity of the shaken. He argues that it emerges in the conditions of political violence—the frontline experience. Moreover, Patočka brings into discussion the puzzling concepts of day, night, metanoia and sacrifice, which only further problematise the idea. Researching how other thinkers have examined the phenomenon of the frontline experience, it becomes obvious that Patočka did not invent the obscure vocabulary ex nihilo. Concepts such as frontline experience, sacrifice and the (...) metaphors of the day and night were commonly used by thinkers in the inter-war and post-war eras in their examination of community. This study aims to reconstruct the idea of the solidarity of the shaken as contextualized within a broader scholarly debate on the concept of community. Through the critical dialogue between Patočka’s works and the works of Ernst Jünger and Pierre Teilhard de Chardin, this study will portray how Patočka, in his discourse on the frontline experience, follows the usual pattern of overcoming one’s individuality, transcending and opening up to the constitution of solidarity. This paper will argue that Patočka defined the solidarity of the shaken in an attempt to revive the positive aspects of a community and break with the regressive uses to which it was put in the twentieth century. (shrink)