Palestine 1918, ZKr German army postal service 13.7.18 6-7 V * * * on post paid picture postcard to Kiel, sender address army postal service 663 and violet letter cancel Royal Prussian fighter squadron number 1 the army group F, these 1916 established unit belonged to the army group Jildirim (Yildirim) and operated in Palestine and in the draw near Osten, rare good condition