Product Overview
This Nachrichten (signals) unit stein is dated 1944 and has a Heer helmet on the lid.
The soldier in the image is sitting under a tree and with his field phone connected to a grounding stake. The stake is used to cut the communication line required in half by sending a single line of the signal through the ground, which works best and travels the farthest in ground conditions that are wet, which is why it's raining.
More on that can be seen here:
https://www.youtube.com/watch?v=UonTu2c6nWw
