MAPS OF HISTORY · ON THIS DAY · September 27 · 1940
ON THIS DAY · 27 SEPTEMBER 1940
The Tripartite Pact

27 Sep 1940 — Germany, Italy and Japan sign a mutual-defense pact in Berlin, aimed squarely at keeping America out of both oceans’ wars. The Axis is now a world system.
THE MOMENT IN CONTEXT
First, the sideshow that rearranged the calendar. Mussolini’s “parallel war” — the arrows into Egypt and Greece — was supposed to give Italy conquests of its own; instead, by early 1941, the Greeks have thrown the invaders back into Albania, the British have destroyed an Italian army in the desert and — the ✕ at Taranto — crippled three battleships at anchor with twenty-one biplanes flying at night, a raid naval attachés from Tokyo would study torpedo by torpedo. Germany must rescue its ally twice: the Afrika Korps to Libya, and in April 1941 a Balkan campaign that turns Yugoslavia and Greece red on your map in three weeks. Whether the Balkan detour fatally delayed what came next is a genuine historians’ argument — the spring of 1941 was also exceptionally wet, and the panzers waited on the ground as much as on the calendar.
From Chapter 11 — Barbarossa: The Gamble That Ends the Gambles of The Road to War, 1931–1941 (1941).
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TEACH THIS IN 5 MINUTES
- Why it happened — The program had always pointed east. Whatever tactical opportunism governed 1936–40, Lebensraum in the East was the fixed star — in Mein Kampf, in the Hossbach conference (Ch. 5), in…
- The turn — Berlin, 27 September 1940. The chapter’s pivot is not on the battlefield but at the signing table where the ● stands in Berlin: the Tripartite Pact, by which Germany, Italy…
- What it changed — The Holocaust enters its most murderous phase. Behind Barbarossa’s arrows, mass shooting became system: by the end of 1941 the Einsatzgruppen, Order Police and local auxiliaries had murdered on…
Then ask the room: Could Barbarossa have succeeded — and what turns on the answer? The argued answer is on the chapter page →
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