Book excerpt: The Siege of Derry (1688-9) is the key political myth in Loyalist culture. This study looks at the Siege, reconstructing the ways in which the defence of Derry has been commemorated and interpreted over the last 300 years. Celebrated by historians, artists, poets and preachers, re-enacted in anniversary demonstrations and parades, the Siege provides a unique insight into the mixture of triumphalism and insecurity that lies behind the slogan 'No Surrender!'