Rui’s Renditions a very crude ‘listening device’.

Rui’s Renditions
Postcard from Drakegoodman’s collection depicting German soldiers from an unknown unit in no-man’s-land with what seems to be a very crude ‘listening device’.
The note on the back reads: “Funnel listening post in front of Neuve-Chapelle, 6 km north from La Bassée, northern France, 1916.