Catriona Pennell graduated from Trinity College, Dublin in 2008 with a PhD in modern British and Irish history. During her research, she was awarded two major scholarships: the R.B. McDowell-Ussher Fellowship from Trinity College, Dublin (2003-2006), and the R.H.S. Centenary Fellowship from the Institute of Historical Research (2006-2007). Since 2009 she has been a lecturer at the University of Exeter's Cornwall Campus. Her first monograph, A Kingdom United: British and Irish Responses to the Outbreak of the First World War, was published by Oxford University Press in 2012. She is currently working on various aspects of Ireland's experiences in the First World War, including a reassessment of the 1918 Conscription Crisis.