The Reconquista — the centuries-long series of campaigns by Christian kingdoms to retake the Iberian Peninsula from Muslim rule, from the initial Umayyad conquest in 711 CE to the fall of Granada in 1492 — spanned 781 years, and is often cited as the longest war in history, though historians debate whether such a long, intermittent series of conflicts should be treated as a single 'war' at all.
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The Reconquista — the centuries-long series of campaigns by Christian kingdoms to retake the Iberian Peninsula from Muslim rule, from the initial Umayyad conquest in 711 CE to the fall of Granada in 1492 — spanned 781 years, and is often cited as the longest war in history, though historians debate whether such a long, intermittent series of conflicts should be treated as a single 'war' at all.
The longest duration of an intermittent military conflict widely treated by historians as a single continuous war.
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Limits Registry. LR-LONGEST-WAR-IN-RECORDED-HISTORY. Longest war in recorded history. 2026.