Spy - World War II, #2

In the early morning of September 1, the loudspeakers of the different units of the barracks began to howl. They all raised their heads, startled. The announcer announced that the German Führer was going to speak to his people. And then they heard the news. The German army, ignoring its ultimatum, had just crossed the Polish border.  Spy is a story belonging to the World War II collection, a series of war novels developed in World War II