This episode covers September 4–9, 1939, as WWII spreads from Poland to the world stage. Churchill returns to power, new nations like South Africa and Canada join the war, and America declares neutrality. The Allies offer minimal support as Poland endures massacres and launches a major counterattack. At sea, U-boats start sinking ships, and tragic friendly-fire incidents occur. Home fronts adapt rapidly while chaos and improvisation define the early days of a truly global conflict.