The digital project Castleton Lanterns has as its focus a series of slides figuring Irish soldiers who had served during the First World War. The collection was made in 1918 for a commemorative presentation, and only rediscovered in 2013 in the Alexandra Church in Belfast. The collection takes its name from the Castleton Presbyterian Congregation. The renown Belfast photographer Alexander Robert Hogg took the photographs for the slides . The 77 slides show soldiers from Belfast, both in group portraits and individual portraits. The identification of individuals is partially possible thanks to a roll of honour, but this list now seems defective. With the help of the public soldiers continue to be identified, and information about their wartime service can be added.