EN
The Fighting Solidarity Organization (1982-1990) was a noticeable part of the Polish opposition (i.e. Solidarity) movement, which appeared during the martial law period (introduced on 13 December 1981). The goal of the article is to follow the process of forming the collective identity of Fighting Solidarity members and supporters. The author tries to present the ordinary members’ point of view. The source basis of this article is mainly the texts from the FS clandestine press written by the activists less exposed than the founders of the FS, like Kornel Morawiecki. The concept of collective identity used by the Italian sociologist Alberto Melucci and German sociologist Priska Daphi is an important factor of inspiration for this analysis. The author does not use in the article the research methods characteristic of sociology, recommended by Melucci for studying social movements, but the traditional method of historical analysis of written and recorded sources.