The Longest Wars in History (One Lasted Over 700 Years!)

Military History
By Amelia Brooks

Wars have shaped the course of history, with some conflicts spanning centuries. These wars were often marked by intermittent battles, periods of peace, and shifting alliances. Explore the ten longest wars in history, showcasing the resilience and determination of nations and peoples.

1. The Reconquista (718–1492, 774 Years)

© TheCollector

The Reconquista is a tale of resilience, stretching over 774 years. It was characterized by intermittent battles, truces, and shifting alliances. The fall of Granada in 1492 marked the end of Muslim rule in Spain. Despite its length, this “war” was more of an on-and-off struggle than constant fighting. The cultural and religious transformation of the Iberian Peninsula was profound. The lingering impact of the Reconquista is evident in Spain’s architecture and traditions. This era was pivotal in shaping modern Spanish identity.

2. The Roman-Persian Wars (54 BCE–628 CE, 681 Years)

© The Roman Empire

In the annals of ancient superpower rivalries, the Roman-Persian Wars stand out. Lasting 681 years, these wars saw both empires engage in endless border clashes. Neither side could deliver a decisive blow. The Byzantine-Sassanid War (602–628) nearly destroyed both before the rise of Islam. This prolonged conflict showcased the enduring strength and stubbornness of both empires. It ultimately set the stage for the Arab conquests that would follow.

3. The Arauco War (1536–1881, 345 Years)

© Americas Quarterly

The Arauco War tells the story of the Mapuche’s fierce resistance against Spanish and later Chilean forces. Spanning 345 years, this conflict was marked by guerrilla tactics. The Mapuche never fully surrendered, maintaining their independence and cultural identity. This tenacity and resilience have made them a proud indigenous group today. The legacy of the Arauco War continues to influence Chilean society and Mapuche culture.

4. The Three Hundred and Thirty-Five Years’ War (1651–1986, 335 Years)

© Cracked.com

The Three Hundred and Thirty-Five Years’ War is an amusing historical footnote. This “war” between the Netherlands and the Isles of Scilly lasted 335 years, yet not a single battle was fought. A forgotten naval dispute during the English Civil War sparked it. The peace treaty, signed in 1986, was more of a humorous gesture than a necessity. With zero casualties, it remains the least deadly conflict in history.

5. The Byzantine-Ottoman Wars (1265–1479, 214 Years)

© Warfare History Network

The Byzantine-Ottoman Wars were marked by the slow erosion of Byzantine territory. Lasting 214 years, these wars culminated in the siege and fall of Constantinople in 1453. This marked the end of the Byzantine Empire and a shift in power. The Ottomans strategically chipped away at Byzantine lands over centuries. This era of conflict significantly influenced the course of European and Middle Eastern history.

6. The Punic Wars (264–146 BCE, 118 Years)

© The Conversation

The Punic Wars were a series of epic struggles between Rome and Carthage. Spanning 118 years, these wars saw legendary moments like Hannibal’s crossing of the Alps with war elephants. Despite Carthage’s brilliance, Rome emerged victorious. The final defeat saw Rome destroy Carthage and salt its earth, leaving a lasting legacy. These wars forged Rome’s path to dominance in the ancient world.

7. The Hundred Years’ War (1337–1453, 116 Years)

© Warfare History Network

The Hundred Years’ War was a series of conflicts between England and France, lasting 116 years. Joan of Arc’s leadership and victories during 1429–1431 were pivotal for France. Though it wasn’t a single war, it profoundly shaped both nations. The war ended with France reclaiming its territories, altering the course of European history. This era was a catalyst for national identity formation in both countries.

8. The Dutch War for Independence (1568–1648, 80 Years)

© Warfare History Network

The Dutch War for Independence was an 80-year struggle against Spanish rule. It led to the emergence of the Dutch Republic as a global power. A key moment was the 1609 Twelve Years’ Truce, which was broken but significant. The war fostered a spirit of independence and innovation, propelling the Dutch into a golden age of trade and art, leaving a lasting legacy in Europe.

9. The Thirty Years’ War (1618–1648, 30 Years)

© The Past

Europe’s most destructive religious war, the Thirty Years’ War, lasted 30 years. It reshaped the continent, culminating in the Peace of Westphalia in 1648. The war’s devastation was unprecedented, with 8 million casualties. This conflict’s resolution laid the groundwork for modern nation-states. It remains one of history’s most impactful and tragic episodes.

10. The Cold War (1947–1991, 44 Years)

© BBC

The Cold War was a 44-year period of geopolitical tension between the USA and USSR. While no direct war occurred, proxy conflicts like Vietnam and Afghanistan were deadly. The Cuban Missile Crisis of 1962 nearly escalated to nuclear war. This era was marked by espionage, ideological battles, and a nuclear arms race. The Cold War’s end in 1991 reshaped global politics and alliances.