The field questions

The correlation is uncomfortable: no Depression, no Nazi majority — the party polled 2.6% in prosperous 1928 and 37% in desperate 1932 — and Japan’s military radicals rode the same wave of rural misery. But economics chose neither the destination nor the methods. Weimar Germany and Japan both had liberal, internationalist options on the ballot; what the slump did was discredit them and hand prestige to men who had always wanted conquest and now had an audience. Most historians therefore treat the Depression as the enabling condition — it opened the door — while ideology and institutions (a Japanese army outside civilian control, a German conservative elite willing to deal) decided who walked through it. The transferable lesson: economic catastrophe does not make aggression, but it dissolves the antibodies against it.

READ CHAPTER 1 — The World the Slump Made →

The case for futility is strong: the two powers with Pacific fleets, Britain and America (not even a member), would not risk war in the Depression’s worst winter, and sanctions without them were arithmetic without numbers. The case against futility is subtler: Japan in 1931 was internally divided, its civilian government desperate for external cover, its economy import-dependent — a credible oil or credit embargo might have armed Tokyo’s moderates rather than its radicals. The historiographical middle holds that the League’s members, not its machinery, failed: they chose to treat honesty (the Lytton Report) as a substitute for pressure rather than a basis for it. The Manchurian debate matters because it set the template — every argument for appeasing Hitler in 1936–38 had been rehearsed in 1932. Judge the first failure and you have judged them all.

READ CHAPTER 2 — Mukden: The First Unpunished Gamble →

Partly because he kept behaving, tactically, like a normal statesman: signing pacts, invoking fairness, taking plebiscites. Partly because believing him was expensive — if Mein Kampf was the plan, the only answers were rearmament or preventive war, and no democracy’s electorate in 1934 would fund either. And partly because of a genuine interpretive problem historians still argue: A.J.P. Taylor’s Origins of the Second World War (1961) claimed Hitler was an improviser who took what blundering opponents offered, while the intentionalist school (Trevor-Roper, Hillgruber) points to the book, the Hossbach conference and the consistent eastward drive as evidence of program. The record of 1933–35 supports a synthesis: fixed objectives, opportunist timing. Which means the statesmen’s error was not misreading any single move — each was ambiguous — but assuming ambiguity meant innocence. When an actor tells you his goals, weight the telling.

READ CHAPTER 3 — Germany Turns Charcoal →

Arguably yes — and this is the enduring policy lesson the episode teaches. Full pressure had a real chance of working: Italy’s war ran on imported oil, Mussolini later admitted an oil embargo would have forced him out “within a week” (self-serving, but the fuel margins were genuinely thin), and the Royal Navy commanded the route his army supplied. No pressure would at least have preserved Italy’s alignment against Hitler — the Stresa logic. The middle course delivered neither: it enraged Italy into Germany’s arms while saving Ethiopia nothing. Defenders of London and Paris answer that publics demanded action, navies feared a Mediterranean war, and the American oil trade (outside the League) would have leaked through any embargo. The debate is the ancestor of every modern sanctions argument; what it settled is that sanctions are a weapon, not a gesture — sized for effect or better sheathed.

READ CHAPTER 4 — Abyssinia: The League Dies in Africa →

As a summary of state policy, nearly: Germany and Italy committed air forces, armor and (in Italy’s case) an army; Britain and France embargoed both sides, which in practice meant the Republic. But the sentence hides three complications. The USSR did intervene — arms, advisers, and the NKVD, whose imported purges against Trotskyists and anarchists (the Barcelona May Days of 1937) corroded the Republic from within and let Franco’s propaganda cast the war as Christianity versus Bolshevism. Some 35,000 International Brigade volunteers from fifty countries intervened where their governments refused, a moral datum the state-centric sentence erases. And “the democracies” were not monolithic: Blum’s France leaked aid across the Pyrenees in cycles of open and closed borders. The deeper question the war still poses — when does non-intervention become intervention on the stronger side? — has outlived every participant.

READ CHAPTER 5 — The Rhineland Bluff and the Spanish Rehearsal →

The case for excuse writes itself: the Nationalists lost every major battle of 1937–38, the retreat was chaotic and often callous — the deliberate breach of the Yellow River dikes in June 1938 slowed Japan for months at the cost of hundreds of thousands of Chinese lives, drowned or starved, a decision as ruthless as anything an occupier ordered. The case for strategy is the map itself: Japan’s armies could hold cities and rail lines but not the space between; every kilometre of advance lengthened supply lines and multiplied garrisons; and the government that fled to Chungking was still there, fighting, in 1945 — the outcome Tokyo’s three-month theory said was impossible. Most military historians now grant the strategy’s logic while insisting the costs be counted in the same breath, because they were paid by peasants who were never consulted. The seminar question underneath: when a weaker power’s only winning strategy is attritional suffering, who has the right to choose it?

READ CHAPTER 6 — China: The War Nobody Declared →

Run the three verdicts against the evidence. Betrayal is the Czech verdict and morally unanswerable — a functioning democracy was dismembered by its friends, unconsulted; whatever else is argued, this stands. Blunder is the military-historical verdict: the year bought strengthened Germany relatively (Czech divisions and Škoda gone, German tank production up) even if it matured British radar and fighters — and the German coup plotters of September 1938, whatever their real chances, were never tested. Best-of-bad-options was Chamberlain’s own defense: no ally ready, Dominions opposed, publics desperate for peace, and a genuine chance — he believed — that Hitler’s aims were limited. The debate has never closed because it is really a debate about decision-making under uncertainty: Chamberlain’s error was not preferring peace, but structuring the choice so that only Hitler’s good faith could redeem it. When your policy requires your adversary’s honesty, the policy is the hostage.

READ CHAPTER 7 — Anschluss and Munich: Appeasement at Full Stretch →

The critique is Taylor’s: the guarantee handed Warsaw the power to decide when Britain went to war, deterred nothing (Hitler doubted its sincerity, correctly as to capability), and may have stiffened Polish refusal to negotiate while foreclosing the Soviet alliance that alone could have made it real. The defense answers on different ground: by March 1939 the strategic question was no longer “can Poland be saved?” but “will Hitler’s next war be fought with or without allies, against a Britain committed or discredited?” The guarantee was less a military instrument than a public vow that the next aggression meant general war — a tripwire for British honor and, crucially, for Dominion and American opinion. Both readings can be true: the guarantee was simultaneously unkeepable as protection and indispensable as commitment. The seminar’s transferable problem — extended deterrence that outruns capability — did not retire in 1939; it moved to other maps.

READ CHAPTER 8 — Prague, the Pact, Poland →

The “decadence” reading — a Third Republic rotten with division that deserved its fate — was written first by Vichy itself (the defeat as moral judgment) and long echoed abroad. Modern scholarship (Ernest May, Julian Jackson) has largely dismantled it: France in 1940 fielded more tanks than Germany, fought — 50,000–90,000 French soldiers died in six weeks, a rate comparable to Verdun — and fell to a specific, contingent operational failure: a bad doctrine meeting a brilliant gamble at Sedan. The answer matters because each reading carries a policy moral. If France collapsed morally, the lesson is about national character — comfortable and useless. If France lost operationally while fighting hard, the lesson is that doctrine, command tempo and the location of reserves can undo material equality in days — a lesson every general staff since 1940 has studied. And it matters for justice: the “collapse” story was the alibi of the regime that used defeat to bury the Republic.

READ CHAPTER 9 — The Fall of the West →

Three defensible answers, each with a constituency. Provocation: the embargo school notes that Japan’s cabinet had approved southern expansion only “so long as war with America is avoided,” and that the oil cutoff converted a preference into a countdown — without August 1941, no December 1941. Date-stamp: the structural school answers that Japan’s program (China subjugated, the Indies taken, the Co-Prosperity Sphere built) was itself incompatible with any Pacific order America would accept; oil set the calendar, not the collision. Prevention-that-failed: the deterrence school holds that pressure nearly worked — the Konoe government sought a summit, the navy doubted victory, and only the army’s refusal to leave China closed the exit; Hull’s November note demanding withdrawal was the last form of a real negotiation. The richest seminar version asks what each side believed the other could concede: America never grasped that “leave China” meant, to Japan’s army, national dishonor worth dying against; Japan never grasped that “abandon the victim” was, after four years of atrocity photographs, no longer sellable in Washington. Wars begin where empathy of estimation ends.

READ CHAPTER 10 — The Turn South →

The “lost victory” tradition (fed by German memoirs) blames the Balkan detour, the August diversion of armor to Kiev, and winter — implying a Moscow taken in October and a Soviet collapse. Modern operational scholarship (Glantz above all) has largely dismantled this: the campaign’s logistics were failing by August regardless of route — trucks, rail gauge, and distance did what no Soviet army yet could — and taking Moscow in 1812 had settled little. The deeper answer is political: the plan assumed the Soviet state was a “rotten structure” that would fall at the door’s kick; instead the regime relocated 1,500 factories eastward and mobilized reserves the plan said could not exist. What turns on the answer matters beyond military history: if Barbarossa was winnable, the world war’s outcome hung on a few marshal’s choices; if it was structurally doomed, then Hitler’s decade of successful gambles ended precisely where gambling met an opponent whose depth no bluff could reach. The evidence favors the second — with the sobering rider that “doomed” took four more years and most of the war’s dead to demonstrate.

READ CHAPTER 11 — Barbarossa: The Gamble That Ends the Gambles →

Both, and the distinction is the lesson. War with Japan was so far from a surprise that Washington had war-gamed it for two decades (War Plan Orange), read Japan’s diplomatic cipher in real time, and sent explicit war warnings ten days early; conspiracy theories that Roosevelt knew Pearl Harbor specifically have been repeatedly tested against the decrypt record and have failed — the intercepts pointed clearly at Southeast Asia, and no message named Hawaii. What failed was the last mile: the assumption that Japan would not attempt the operationally spectacular, the radar contact explained away, the fleet moored in rows because sabotage, not air attack, headed the local threat list. The congressional inquiry (39 volumes) and every serious study since converge on system failure without a hidden hand. The transferable seminar point, which intelligence services still teach with this case: warning is not the same as expectation, and expectation is not the same as readiness — each conversion has to be made deliberately, and each can fail separately.

READ CHAPTER 12 — Pearl Harbor: The Roads Meet →