Did World War II really transform the United States into a more productive economy?

In this episode of the Economic and Political History Podcast, I speak with Alexander J. Field, the Michel and Mary Orradre Professor of Economics at Santa Clara University and author of The Economic Consequences of U.S. Mobilization for the Second World War, published by Yale University Press.

The conventional story is familiar: World War II mobilized American industry, generated extraordinary increases in production, created new technologies, and laid the foundations for the postwar economic boom.

Alexander Field challenges an important part of that story.

His research finds that U.S. manufacturing productivity actually declined during World War II. Between 1941 and 1945, total factor productivity fell substantially, and the evidence suggests that much of the celebrated wartime learning did not translate into lasting increases in productive capacity after the war.

Why?

One answer is surprisingly simple: the American economy was suddenly forced to produce things it had very little experience producing. Factories shifted from familiar civilian products to aircraft, tanks, ships, weapons, and other military goods. The transition itself was enormously disruptive.

We discuss the difference between production and productivity, why the distinction matters, and why the fact that the U.S. still had substantial unused economic capacity in 1941 changes how we should understand wartime mobilization.

We also explore some extraordinary episodes from the war economy:

• The productivity boom of the 1930s—and why the Depression decade may have been one of America's most technologically progressive periods
• Ford's transition from the Model T to the Model A as an analogy for wartime production
• The catastrophic loss of natural rubber after the fall of Singapore
• The enormous U.S. synthetic rubber program—and the political fight over alcohol versus petroleum as its feedstock
• German U-boats and the disruption of the Gulf-to-East-Coast petroleum supply chain
• The Big Inch and Little Big Inch pipelines
• Why some sectors that were starved of labor and capital nevertheless became more productive
• “Learning by doing without”
• Military logistics and the origins of linear programming
• Kantorovich, Koopmans, and George Dantzig
• Why the conventional “production miracle” narrative has proved so durable
• Wartime business advertising and the changing claims managers made about productivity
• What the history of World War II can teach us about economic history itself

Field's book is ultimately a challenge to a very familiar idea: that war mobilization necessarily strengthens an economy's long-run productive capacity.

The question is not whether American production during World War II was extraordinary—it unquestionably was. The question is what that extraordinary production actually did to productivity and long-run economic potential.

The Economic and Political History Podcast explores the intersection of economics, politics, institutions, and history. I’m Javier Mejia, a lecturer in political science at Stanford University.

If you enjoyed this conversation, subscribe to the podcast, leave a comment, and share the episode with someone interested in economic history, World War II, productivity, or the history of American capitalism.

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