1915. SLESVIG. Feldpostkarte (Gruss von den Karpaten - Volocz) cancelled K.D. Feldpoststation Nr. 153 23.6.15 to Ober Jerstal, Nord Schleswig. Written in Danish. The text mention the city. Military cancel: 3. LANDST. INF. BAT. 3 KOMP. FLENSBURG. Very unusual with cards from Karpaten.