German Dienstpost cover with Scott Nos. C3 and N2 cancelled in Luxembourg on 1 October 1940, the first day of validity for the German issued stamps of occupied Luxembourg. The stamps of Luxembourg remained valid for postage until 2 October 1940. Officially permitted mixed-postages of stamps from Luxembourg and Germany, on one cover, were possible on these two days only and are extremely scarce.
Just as dawn was breaking on 10 May 1940, Hitler, accompanied by Keitel, Jodi and others of the Oberkommando der Wehrmacht staff, arrived at headquarters which he had named Felsennest, near Muenstereifel. “Twenty-five miles to the west German forces were hurtling over the Belgian frontier. Along a front of 175 miles, from the North Sea to the Maginot Line, Nazi troops broke across the borders of three small neutral states, Holland. Belgium and Luxembourg, in brutal violation of the German word, solemnly and repeated given.”