This chapter focuses on how digital technologies, especially geographical information systems (GIS), can be used better to understand the way this northern English town was affected during its worst period of the War, April and May 1915. It reveals how each town has its own chronology of war dependent on where local men saw action and it shows how digital technologies can underpin the leap of imagination required to begin to comprehend the impact of the War on the British communities waging it. The chapter explores how the digital humanities and historical GIS can nuance or challenge the dominant versions of the war, with a case study of the impact of Second Battle of Ypres on the town of Lancaster. The town of Ypres in southern Belgium was strategically important, especially for the British, because of its role in protecting the Channel ports.