History often focuses on empires, kings, and overwhelming powers, but many decisive moments have been shaped by groups that were thought to be doomed to failure. Smaller armies, marginalized communities, and underestimated leaders have time and again upended the course of events through their strategy, resilience, and sense of timing. These moments show that influence does not always come from power alone. Here are 20 examples of how underdogs changed the course of history.
1. The Greeks held their ground at Marathon
In 490 B.C., Athens faced a Persian army that vastly outnumbered its own forces. The Greek soldiers took advantage of their disciplined formations and the terrain. This victory preserved Greece’s independence. It also shaped the political and cultural development of the Western world. Without this victory, Greek democracy might never have come into being.
2. The Vietnamese defeated the Chinese at the Bach Dang River
In 938, Vietnamese forces faced a much larger Chinese fleet that was attempting to regain control. General Ngo Quyen used wooden stakes hidden in the riverbed, timed to coincide with the tides, to trap the enemy ships. When the water receded, the Chinese fleet was destroyed. This victory secured Vietnam’s independence for centuries and marked the end of direct Chinese rule.
3. The Mongols unite against their powerful neighbors
The early Mongol tribes were fragmented and underestimated. Under Genghis Khan, they became a disciplined and mobile force. This transformation enabled them to defeat far more powerful states. Their rise reshaped the history of Eurasia, proving that organization and fearlessness are just as important as brute force.
4. Joan of Arc changed the course of the Hundred Years' War
In the early 1400s, France was losing territory and morale. Joan of Arc inspired the troops and helped lift the siege of Orléans. Her leadership changed the course of the war. France subsequently regained much of its territory, but her influence extended beyond the battlefield to shape the nation’s identity.
5. The Swiss militias defended their independence
The Swiss infantry faced heavily armed European knights. By taking advantage of the terrain and employing coordinated tactics, they won decisive battles. These victories thwarted foreign domination. Switzerland’s independence was thereby strengthened, and its success challenged medieval military norms.
6. The Ottomans captured Constantinople
In 1453, the Ottomans were not yet regarded as a dominant empire. Constantinople’s defenses were legendary. New artillery technologies made it possible to breach the walls, and the city’s fall reshaped global trade and power structures. It also marked the end of the Byzantine Empire.
7. The Dutch resisted Spanish rule
The Netherlands was a small region under Spanish control. Dutch forces mounted a prolonged resistance and employed environmental tactics such as flooding, which enabled them to gain their independence after decades of struggle. The Dutch Republic would go on to become a major commercial power.
8. Japan's Modernization During the Meiji Restoration
In the 19th century, pressure from the West threatened Japan’s sovereignty. Instead of collapsing, Japan rapidly modernized its institutions. Military and economic reforms followed. The country avoided colonization and gained global influence.
9. The American colonies defied Great Britain
In the 18th century, Great Britain was the most powerful empire in the world. At first, the colonies lacked resources and unity, but strategic alliances and their perseverance turned the tide. Independence reshaped global political thought. The outcome went on to inspire independence movements around the world.
10. Haiti overthrew colonial rule
The slaves of Saint-Domingue revolted against French rule. Despite their limited resources, they defeated the European armies. Haiti became the first independent Black republic. The revolution challenged conventional wisdom about power and freedom, and its impact was felt far beyond the Caribbean.
11. Greece held out against Italy during World War II
Italy had expected a quick victory in 1940, but Greek forces pushed it back into Albania. This resistance disrupted the Axis’s timeline. Germany was forced to intervene, thereby altering its overall war strategy. This delay had repercussions for the entire conflict.
12. Finland repelled the Soviet Union
During the Winter War, Finland had to contend with the Soviet Union’s overwhelming numerical superiority. Finnish troops used the terrain, their mobility, and their defensive tactics to hold their ground. The conflict lasted much longer than expected. It changed the way military strategists viewed small nations. Finland preserved its independence despite heavy losses.
13. The Viet Minh defeated the French colonial forces
The Vietnamese resistance fighters faced a well-equipped colonial army. Their knowledge of the terrain and local coordination proved decisive. The victory at Diên Biên Phu brought an end to French rule. It marked a turning point in the region’s history. This outcome heralded the decline of European colonial power in Asia.
14. The Zulu Victory at Isandlwana
The Zulu warriors faced off against British forces equipped with superior weapons. Thanks to their speed and coordination, they won a major battle. This defeat shocked Great Britain. It called into question assumptions about colonial military dominance.
15. South Korea survived a near-total collapse
At the start of the Korean War, South Korea was on the verge of defeat. Strategic defense and international support turned the tide. The country’s transformation reshaped the global perception of postwar recovery.
16. Afghan fighters resisted the Soviet Union
Afghan resistance groups took on a global superpower in the 1980s. Guerrilla tactics prolonged the conflict, leading to the Soviet withdrawal a few years later. This outcome influenced the end of the Cold War and altered the regional balance of power for decades.
17. Poland has preserved its national identity
For more than a century, Poland was deprived of its independence, but its cultural traditions and language endured despite foreign rule. This preservation played a vital role when Poland reemerged as a nation after World War I. Its identity proved stronger than the occupation.
18. The suffragettes expanded democratic rights
Women who demanded the right to vote were ignored for decades. Persistent protests shifted public opinion, and legal reforms followed in several countries. As a result, democratic systems have become more inclusive.
19. India achieved independence through nonviolence
India confronted the British Empire with limited military power. Massive civil resistance put pressure on the colonial regime, and independence was finally achieved in 1947. This movement influenced global approaches to protest.
20. The Baltic states regained their independence
Estonia, Latvia, and Lithuania were incorporated into the Soviet Union. Peaceful movements gained momentum in the late 1980s, and independence was restored without major violence. Their success symbolized a broader shift across Europe.