For decades, scholars of Indonesia have rejected the religious claims of the Darul Islam movement, interpreting the antagonism between the Islamic state and Soekarno's republic as a fight for power, self-assertion, or land rights. Recently Kartosuwiryo and the Darul Islam have become heroic symbols of the local Islamist struggle, offering an alternative vision of this politician. The author looks beyond this dichotomy between rebel and martyr to unveil a 'third' dimension of Kartosuwiryo - a politician whose legacy has been shaping the role of Islam in Indonesian politics for over fifty years. In a blend of archival sources, printed material, and oral accounts, the author follows the career and ideology of Kartosuwiryo, nationalist leader of the Sarekat Islam party and later Imam of the Islamic State of Indonesia. Following the trajectory of a political activism that was consistently dedicated to the formation of an independent Indonesian state, the chapters delineate the gradual radicalization of the Islamic party and of Kartosuwiryo's own ideals from the 1920s until the 1950s. Focusing on the dialectic between the religious and secular anti-colonial movements, this book explores the failure of political Islam in the mid-1950s; the consolidation of the Pancasila state under Soekarno's and Suharto's regimes; the latter's attempt to co-opt what was left of the Darul Islam in the 1970s; and the re-emergence of political Islam and Kartosuwiryo's memory in the post-1998 era. A testament to the relevance of historical enquiry in understanding contemporary politics, Islam and the making of the nation guides the reader through the contingencies of the past that have led to the transformation of a nationalist leader into a 'separatist rebel' and a 'martyr', while at the same time shaping the public perception of political Islam and strengthening the position of the Pancasila in contemporary Indonesia.