A tram rattles across cobblestones in front of Tourcoing's grand railway station as the town — deep in German-occupied northern France — quietly endures the autumn of 1915; what makes this worn card extraordinary is its reverse, stamped with two layers of wartime authority: the oval "Militär-Eisenbahn-Direktion I / Brief-Stempel Nr. 57" (Military Railway Directorate I, Letter Stamp No. 57) and the railway post cancellation "Kortrai–Lille Bahnpost Zug 9, 24.10.15." A soldier named Müller (first name unclear) writes from occupied Tourcoing on October 23, 1915 to Alwin Petzold in Bischofswerda, Saxony, lamenting that he hasn't been able to write, hopes Alwin isn't angry, and sends warm greetings to all — a fragile human moment threaded through the machinery of the Great War. Tourcoing, a textile city on the Belgian border, was occupied by Germany from October 1914 until liberation in October 1918. The Kortrai–Lille military railway line was a critical German logistics artery on the Western Front.