German Female Signal Auxiliaries (Nachrichtenhelferin des Heeres) M31 Canteen (Feldflasche 31). The Female Signals Auxiliary Corps (Nachrichtenhelferinnen des Heeres) were organized in a military system and were tasked with all aspects of communications within the occupied countries and in certain military communications centers within Germany that required special security that was unsuitable for civilian personnel. Personnel serving with the Female Signals Auxiliary Corps were outfitted with uniforms and insignia, including a special small sized canteen with a 0,5 liter capacity. The canteen is nicely maker marked and dated 'ESB 40' indicating production in 1940. There is some minor moth damage to the felt cover and unfortunately one of the straps is broken, see close-up photo. Rare and hard to find original canteen in used condition!