The Memories of the Napoleonic Wars and St. Paul's Cathedral as 'British Pantheon' Takeshi NAKAMURA The wars with Revolutionary and Napoleonic France (1793-1815) were the climax of the British warfare of 'the long eighteenth century', and could be regarded as a first war against modern ideological enemy and as anticipating 'total' war. However, despite prominent contributions by Linda Colley, J.E. Cookson, and others, many historians have continued to neglect this period, which was arguably critical in forging the British Nation. This paper deals with the process of transformation of St. Paul's Cathedral in the City of London into the 'British Pantheon'. It examines state commemoration: erecting Naval and Military officers monuments by state expense (1793-1823) and two ceremonies, Naval Thanksgiving Day (1797) and the Funeral of Admiral Lord Nelson (1806). Monuments of Naval and Military heroes in St. Paul's reaffirmed the raison d'etre of British ruling class against threats of the French Revolution and Napoleon. Memories of British victories and military glories were shared not only by the British elites, but also by ordinary men. State commemoration in St. Paul's as 'victorious sphere' bolstered up fighting spirits and national unification against the crisis of French Invasion. The research on the transformation of St. Paul's into 'British Pantheon' suggests an impact of the Revolutionary and Napoleonic Wars on the making of the British Nation. Until the late twentieth century, St. Paul's had continuously been used for arousing the memory of British Imperial greatness and glories.