The Longbow Puzzle

For over a century, the longbow was the undisputed king of medieval European missile weapons — superior in range, rate of fire, and armor penetration to the crossbow. Yet only England adopted it as a mainstay military technology. France and Scotland clung to the technologically inferior crossbow. This puzzle perplexed historians for decades.

Resolution

Allen and Leeson (2008) resolved the puzzle by modeling it as an institutional constraint problem. Unlike the crossbow, the longbow was:

1. Cheap and easy to make — didn’t require expensive materials or specialized craftsmen
2. Required training large numbers of citizens — creating a pool of armed, trained commoners
3. Enabled usurping nobles to organize effective rebellions — trained longbowmen could threaten the ruler

England, with sufficient political stability, could afford the first-best technology. France and Scotland, facing political instability, were constrained to the crossbow to limit rebellion risk. ¹

Historical Evidence

The paper supports this with evidence from:

• The Battle of Halidon Hill (1333) — English longbowmen devastated Scottish forces
• The contrasting political stability of England vs. France/Scotland in the late medieval period
• The correlation between political instability and crossbow adoption across medieval European states

See Also

• institutionally-constrained-technology-adoption
• peter-leeson
• military-innovation-and-adaptation — the modern, whole-field version of the same adoption-lag puzzle

Sources

• 2008

Footnotes

1. 2008 ↩