Reconquista- 781 Years

The Reconquista was the centuries-long war fought by the Christian Kingdoms of Spain and Portugal to reclaim the Iberian Peninsula from the Muslim Moors. The conflict began in 711 AD, when the Moorish invaders first arrived on the shores of Spain, and ended in 1492 with the final expulsion of the Moors from Granada. In between, there were countless battles and sieges, as well as moments of high drama, such as when the Moors besieged Toledo in 1085 or when Christopher Columbus set sail for America in 1492.
Over the course of almost eight hundred years, millions of people were killed in the Reconquista. It was undoubtedly one of the bloodiest wars in human history. But it was also a war that shaped the modern world in many ways. For one thing, the Reconquista was responsible for the spread of Christianity throughout Europe and the Americas. It also helped to create a unified Spanish identity and gave birth to some of Spain’s most iconic cities, such as Toledo and Seville.
The story of the Reconquista is one of heroism and courage, but it is also a cautionary tale about the dangers of religious fanaticism. It is a story that should be remembered by all of us, so that we may never repeat the mistakes of the past.
Roman-Germanic Wars- 708 Years

The Roman-Germanic wars were a series of conflicts that lasted over 708 years, from 113 BC to 596 AD. The majority of these battles were fought between the Germanic tribes and the Roman Empire, but there were also periods when Rome battled against the Franks, Alamanni, Saxons, and other Germanic tribes.
There was a plethora of battles fought in this time frame and although there is no accurate number, it is believed millions lost their lives in this long war.
These conflicts were some of the bloodiest and most brutal in human history, but they also played a significant role in shaping the world we live in today.
Anglo-French Wars – 706.5 Years

The Anglo-French Wars were a series of conflicts fought between the Kingdom of England and the Kingdom of France from 1109 to 1815. These wars encompassed a wide range of military engagements, from large-scale battles to minor skirmishes and sieges. They also saw the involvement of many other European powers, including the Holy Roman Empire, Spain, Portugal, and the Dutch Republic.
The conflict came to an end at the Battle of Waterloo in 1815, which confirmed British control over much of Europe.
Roman–Persian Wars- 681 Years

The Roman–Persian Wars were a series of conflicts between the Roman Empire and the Persian Empire that lasted from 54 BC to 628 AD. The wars began in 54 BC when Parthia, a province of the Persian Empire, invaded Rome’s easternmost provinces, Armenia, and Mesopotamia.
The wars continued off-and-on for centuries until 627 AD when Emperor Heraclius successfully invaded Persia, defeating the Persian Empire in Mesopotamia and bringing an end to over six hundred years of Persian rule in the East. Although the wars were largely fought to a stalemate, the Romans and Persians both achieved significant military successes during the course of the conflict. The Roman Emperor Constantine I is even reputed to have said, “It is better to reign in Hell than serve in Heaven.”
The Roman–Persian Wars were some of the most important conflicts in world history. Not only did they shape the destinies of Rome and Persia, but they also had a profound impact on the development of Christianity and Islam.
Byzantine–Bulgarian Wars – 675 Years

The Byzantine-Bulgarian Wars were a series of wars fought between the Byzantine Empire and the Bulgarian Empire. The wars began in 680, when the Bulgars first invaded Byzantine territory, and continued for hundreds of years, with many periods of peace interspersed with periods of war.
The following centuries were marked by a series of wars between Bulgaria and Byzantium. In 1018, Emperor Basil II captured the Bulgarian capital of Preslav and ended the First Bulgarian Empire. In 1185, Prince Asen I of Bulgaria led a revolt against Byzantine rule and restored the Bulgarian state. This Second Bulgarian Empire lasted until it was conquered by the Ottoman Turks in 1396.
The Ottoman Turks ruled over Bulgaria for the next five centuries. In 1908, however, Bulgaria regained its independence from the Ottoman Empire. Since then, it has been a sovereign state. Today, Bulgaria is a member of NATO and the European Union.
Crusades- 602.5 Years

The Crusades were a series of religious wars fought by Christian Europe against Muslims and Turks. The Crusader states were founded after the First Crusade (1095-1099) and lasted until the fall of the last Crusader state, Acre, in 1291.
This war was traditionally divided into two periods: the Early Crusades (11th-12th centuries), which were marked by considerable success for the Christians, and the Late Crusades (13th century), which were marked by defeats and failures.
The Crusades ultimately failed to achieve their goal of re-establishing Christian control over the Holy Land. However, they did have a significant impact on the history of Europe and the Middle East.
Arab–Byzantine Wars – 421 Years

The Arab–Byzantine wars were a series of conflicts between the Arab Caliphate and the Byzantine Empire. These wars began in the 7th century when the Rashidun Caliphate conquered Mesopotamia and Syria from the Byzantine Empire and continued through the Umayyad and Abbasid caliphates. The main conflict between the two empires was over control of the Levant, although other areas such as Egypt and North Africa were also contested.
The wars also had important consequences for the development of Islamic theology and law, as well as for the relations between Muslims and Christians.
Russo-Ukrainian Wars- Ongoing

The Russo-Ukrainian War is a series of wars that began in 1609 when the Russian tsardom and the Polish-Lithuanian Commonwealth vied for control over the territory of present-day Ukraine. The conflict escalated in subsequent years, as both sides recruited more allies and engaged in more fighting.
In 1991, Ukraine declared independence from the Soviet Union. This led to a period of economic and political turmoil, as Ukraine struggled to establish itself as a sovereign nation. In 2014, tensions between Ukraine and Russia escalated, when Russia annexed the Crimean Peninsula. This led to the start of the ongoing Russo-Ukrainian War, which resulted in the death of over 10,000 people.
The Longest Wars Ever To Be Fought In Human History
War | Start Date | End Date | Duration |
Reconquista | 711 | 1492 | 781 years and 1 month |
Roman-Germanic wars | 113 BC | 596 | 708 years |
Anglo-French Wars | 1109 | 1815 | 706 years, 5 months, 2 weeks, and 3 days |
Roman–Persian Wars | 54 BC | 628 | 681 years |
Byzantine–Bulgarian wars | 680 | 1355 | 675 years |
Crusades | 1096 | 1699 | 602 years, 5 months, 1 week, and 4 days |
Arab–Byzantine wars | 629 | 1050 | 421 years |
Russo-Ukrainian Wars | 1609 | Ongoing | 412–413 years |
Byzantine–Arab wars | 780 | 1180 | 400 years |
Yaqui Wars | 1533 | 1929 | 396 years |
Yemeni–Ottoman conflicts | 1538 | 1911 | 373 years |
Moroccan–Portuguese conflicts | 1415 | 1769 | 354 years |
Russo-Turkish wars | 1568 | 1918 | 350 years |
Arauco War | 1536 | 1883 | 347 years |
Dutch-Scilly Islands wars | 30 March 1651 | 17-Apr-86 | 335 years, 2 weeks, and 4 days |
Spanish–Moro conflict | 1565 | 1898 | 333 years |
Apache–Mexico Wars | 1600 | 1915 | 315 years |
American Indian Wars | 1609 | 1924 | 315 years |
Ottoman–Persian Wars | 1514 | 1823 | 309 years |
Navajo Wars | 1600 | 1866 | 266 years |
Ottoman–Habsburg wars | 1526 | 1791 | 265 years |
Byzantine–Seljuk wars | 1048 | 1308 | 260 years |
Chechen–Russian conflict | 1785 | 2017 | 232 years |
Warring States period | 453 BC | 223 BC | 230 years |
Muslim conquests of Afghanistan | 642 | 870 | 228 years |
Byzantine–Ottoman wars | 1265 | 1479 | 214 years |
Polish–Teutonic War | 1308 | 1521 | 213 years |
Roman conquest of the Iberian Peninsula | 218 BC | 19 BC | 199 years |
Genoese–Mongol Wars | 1280 | 1478 | 198 years |
Franco-Moroccan conflicts | 1765 | 1958 | 193 years |
Cossack uprisings | 1591 | 1775 | 184 years |
Russo-Persian Wars | 1651 | 1828 | 177 years |
Spanish conquest of Chiapas | 1523 | 1695 | 172 years |
Muscovite–Lithuanian Wars | 1368 | 1537 | 169 years |
Russian conquest of Siberia | 1580 | 1747 | 167 years |
Ottoman–Hungarian wars | 1366 | 1526 | 160 years |
Polish–Swedish wars | 1563 | 1721 | 158 years |
Anglo-Dutch Wars | 1652 | 1810 | 158 years |
Sengoku period | 1467 | 1615 | 148 years |
Spanish conquest of Guatemala | 1521 | 1667 | 146 years |
Australian frontier wars | 1788 | 1934 | 146 years |
Hook and Cod wars | 1350 | 1490 | 140 years |
Mongol invasions and conquests | 1206 | 1337 | 131 years |
Early Muslim conquests | 622 | 750 | 128 years |
Second Hundred Years’ War | 1689 | 1815 | 126 years |
Mughal–Sikh Wars | 1635 | 1753 | 118 years |
Hundred Years’ War | 1337 | 1453 | 116 years |
Russo-Kazan Wars | 1438 | 1552 | 114 years |
Norwegian civil wars | 1130 | 1240 | 110 years |
Xhosa Wars | 1779 | 1889 | 110 years |