Father locked up": the diary of the life and death of a printer who was imprisoned in France during the First World War on the occasion of November 11, France 24 tells us the story of Samuel Gunsberg, a printer born in Budapest, who settled in France in 1900 and was imprisoned in 1914 as an "enemy subject". His unpublished diary, found by his granddaughter, a journalist at France 24, reveals the unknown fate of the nearly 60,000 foreign nationals held in concentration camps in France during the First World War.