The article addresses some of the paradoxes of the interwar Czechoslovak Sokol Association. It shows how after 1918 Sokol historiography experienced a boom following national independence: a proliferation of accounts of the Sokol movement’s history to date told in largest part by the leadership of the association itself. These accounts re-narrated the history of the movement so that it became well-adjusted to the new culture of victory of the interwar state, positing throughout a separation between nation and empire and a struggle in which the former, aided by Sokol mobilization, was sure to emerge victorious. The article asks that we read this historiography ‘against the grain’, showing that the actual relationship of Sokol to late-Habsburg civil society was protean and shifting, and only re-cast as unswervingly adversarial in the post-1918 period. The second part of the article looks at the participation of Sokol members and leadership in the war in Slovakia (1919), presented in interwar historiography and commemoration as a culminating moment in Sokol’s participation in the national liberation of Czechs and Slovaks. In fact, there is a compelling case to be made that Sokol’s role in fighting and violence at this time also shows the ongoing contestation and conflict associated with the creation of Czechoslovakia. The article shows that re-narrating the history of the Habsburg period and the war itself to emphasize the voluntarist contribution of groups such as Sokol was an important part of establishing and maintaining the legitimacy of the interwar state.