Enemy Listening Careful Telephone WWIOriginal antique World War One poster Der Feind Hort Mit! Vorsicht Am Fernsprecher! The Enemy is Listening! Be Careful on the Telephone! featuring a design in blue and white depicting a soldier in a military jacket and cap sitting on the ground and smoking a pipe whilst listening to a radio telephone headset with his feet outstretched, the bold warning text above and below. Fair condition, folds, tears, creasing, staining.