Eyüp Sultan Mosque in Constantinople (now Istanbul), Turkey, at the end of the First World War, 1918. View of the inner courtyard near the Abu Ayyub al-Ansari mausoleum

In this collection of photographs taken by French soldiers on the eastern front during World War I – over one hundred years ago – high resolution scans have revealed in stunning detail, not only the film’s grain structure, but also a rich patina of chemical alterations.