Some people fight in small groups. 
Sometimes small groups fight big armies. 
These fighters move fast. They hide and wait for the right time. 
Long ago, leaders in China wrote about these ways. 
These groups want to make the big army leave. They do this by being very tricky. They work hard to win back their lands.
Guerrilla warfare is a way of fighting. It is used by small groups. These groups are often called irregulars. They do not fight in big, formal armies. Instead, they use surprise to win. 
Guerrillas use tactics like ambushes and raids. An ambush is a surprise attack. They also use hit-and-run moves. This means they strike quickly and then hide. This helps them fight much larger forces. They want to tire out the enemy. Eventually, they hope the big army will leave. 
This way of fighting is very old. Long ago, a leader named Sun Tzu wrote about it. In the 3rd century BC, a Roman named Quintus Fabius Maximus used these ways. He used them to wear down an army. 
The word "guerrilla" comes from Spanish. It means "little war." This name shows the difference in size. The small groups fight much bigger state armies. They often hide in woods or mountains. They also need help from local people to succeed.
Guerrilla warfare is a special way of fighting. It is used by small groups of people. These groups are often called irregulars or partisans. They do not fight in big, formal armies. Instead, they use surprise to win. 

This way of fighting is very old. Long ago, a leader named Sun Tzu wrote about it. He wrote in a book called The Art of War. In the 3rd century BC, a Roman named Quintus Fabius Maximus used these ways. He was called Cunctator, which means "the delayer." He used these tactics to wear down Hannibal's army. In China, a general named Peng Yue also used these methods. He attacked supply convoys during the Chu-Han contention. 
The word "guerrilla" comes from the Spanish language. It is a small version of the word for "war." This means "little war." The name shows the difference in size. The small groups fight much bigger state armies. This term became popular during the Peninsular War in the early 1800s. During this time, Spanish and Portuguese people fought against Napoleon's troops. They used these tactics to defeat a much larger army.
Guerrillas often hide in places that are hard to reach. They might use mountains or thick woods. This makes it hard for big armies to find them. They also rely on help from local people. These people might give them food or information. In the 1920s, Abd el-Krim led Berber tribes in the Rif War. They even used tunnels to fight. In Ireland, units called "flying columns" fought in the countryside. They would attack for only 10 to 30 minutes before leaving.
Many famous leaders have studied these ways of fighting. Che Guevara wrote a book about guerrilla warfare. He developed a theory called "foco" theory. This idea says small groups can start a big change. Mao Zedong also used these tactics during the Chinese Civil War. He said that if the enemy advances, you should retreat. If the enemy camps, you should harass them. If the enemy tires, you should attack.
Guerrilla warfare is a specific type of unconventional warfare. It involves small groups of irregular military forces. These groups may include rebels, partisans, or armed civilians. They often fight against regular military forces or police. Unlike formal armies, they do not seek large, open battles. Instead, they use tactics like ambushes, raids, and sabotage. They also use hit-and-run tactics to strike and then disappear. 
Guerrilla tactics rely on several specific methods to succeed. First, they prioritize surprise and mobility over brute strength. They often choose terrain that is difficult for large armies to navigate. Mountains, forests, or tunnels can provide excellent cover. Second, they focus on small, limited skirmishes. They target small groups of enemy soldiers or supply lines. This avoids the danger of a head-on confrontation. Third, they depend heavily on the local population. Local people may provide food, intelligence, or logistical support. Sometimes, these groups also receive help from foreign backers. 
History shows that these methods have been used for centuries. In the 6th century BC, Sun Tzu wrote about these tactics. He included them in his famous book, The Art of War. In the 3rd century BC, the Roman general Quintus Fabius Maximus used them. He was known as "Cunctator," which means "the delayer." He used evasion and ambushes to wear down Hannibal’s army. This became known as the Fabian strategy. In China, the general Peng Yue is also credited with using irregular warfare. He attacked supply convoys during the Chu-Han contention. 
The term "guerrilla" itself has a specific history. It comes from the Spanish word for "little war." This diminutive form highlights the difference in scale. It compares small bands of fighters to massive state armies. The term became popular during the Peninsular War in the early 19th century. During this conflict, Spanish and Portuguese people fought Napoleonic troops. They used guerrilla tactics alongside a scorched earth policy. This helped them defeat a much larger, superior army.
Many different regions have seen unique forms of this warfare. In the 17th century, Chatrapati Shivaji Maharaj used these tactics in India. He fought the much larger Mughal Empire to found the Maratha Kingdom. In the 1920s, Abd el-Krim led Berber tribes during the Rif War. His forces used tunnel warfare alongside modern guerrilla methods. In Ireland, Michael Collins developed urban guerrilla tactics in Dublin. Meanwhile, Tom Barry led "flying columns" in rural County Cork. These units engaged in battles that lasted only 10 to 30 minutes.
In the 20th century, many leaders wrote about these strategies. Mao Zedong summarized his tactics during the Chinese Civil War. He said that if the enemy advances, the guerrillas should retreat. If the enemy camps, they should harass them. If the enemy tires, they should attack. Che Guevara also wrote a famous book on the subject. He developed the "foco" theory of revolution. This theory suggests that small, fast-moving groups can spark a general insurrection.
Guerrilla warfare remains a significant part of modern global conflicts. It is often linked to revolutionary movements and popular resistance. Many modern insurgencies follow the models set by earlier conflicts. For example, the Algerian War of Independence is seen as a prototype. Even different political ideologies, like nationalism or socialism, shape these movements. Today, some groups even include children in their military roles. This complex way of fighting continues to influence how wars are fought around the world.
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