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Invasion
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An invasion is a military offensive consisting of all, or large parts of the armed forces of one geopolitical entity aggressively entering territory controlled by another such entity, generally with the objective of either conquering, liberating or re-establishing control or authority over a territory, altering the established government or gaining concessions from said government, or a combination thereof. An invasion can be the cause of a war, be used as a part of a larger strategy to end a war, or it can constitute an entire war in itself.
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An invasion is a military offensive consisting of all, or large parts of the armed forces of one geopolitical entity aggressively entering territory controlled by another such entity, generally with the objective of either conquering, liberating or re-establishing control or authority over a territory, altering the established government or gaining concessions from said government, or a combination thereof. An invasion can be the cause of a war, be used as a part of a larger strategy to end a war, or it can constitute an entire war in itself. Due to the large scale of the operations associated with invasions, they are usually strategic in planning and execution.
Overview
The term usually denotes a strategic endeavor of substantial magnitude; because the goals of an invasion are usually large-scale and long-term, a sizeable force is needed to hold territory, and protect the interests of the invading entity. Smaller-scale, tactical cross-border actions, such as skirmishes, sorties, raids, infiltrations or guerrilla warfare, are not generally considered invasions.
Military operations that occur within the territory of a single geopolitical entity can sometimes be termed an invasion if armed forces enter into a well defined part of that territory that, at the time of the operation, was completely under the control of armed forces of the other faction in a civil war or insurrection situation. For example, during both the American Revolutionary War and the American Civil War many of the military operations conducted during these wars are called invasions for this reason even though they did not involve "foreign" armies entering from "foreign" nations strictly speaking.
It should be noted that the term invasion does not, in and of itself, imply either a justified or unjustified course of action. For example, during World War II, German military operations conducted against Poland in 1939 are often called the Invasion of Poland while military operations conducted against Nazi controlled France in 1944 is called the Invasion of Normandy. Both military operations are properly called invasions because they involved an outside force entering territory not under its authority or control at the time. The morality or immorality of the military operation itself is not a factor in determining whether it is termed as an invasion.
History
Archaeological evidence indicates that invasions have been frequent occurrences since prehistory. In antiquity, before radio communications and fast transportation, the only way to ensure adequate reinforcements was to move armies as one massive force. This, by its very nature, led to the strategy of invasion. With invasion came cultural exchanges in government, religion, philosophy, and technology that shaped the development of much of the ancient world.
Defenses
States with potentially hostile neighbors typically adopt defensive measures to delay or forestall an invasion. In addition to utilizing geographical barriers such as rivers, marshes, or rugged terrain, these measures have historically included fortifications. Such a defense can be intended to actively prevent invading forces from entering the country by means of an extended and well-defended barrier; the Great Wall of China, Hadrian's Wall, and the Danewerk are famous examples. Such barriers have also included trench lines and, in more modern times, minefields, cameras, and motion-sensitive sensors. However, these barriers can require a large military force to provide the defense, as well as maintain the equipment and positions, which can impose a great economic burden on the country. Some of those same techniques can also be turned against defenders, used to keep them from escape or resupply. During Operation Starvation, Allied forces used airdropped mines to severely disrupt Japanese logistical operations within their own borders.
Alternately, the fortifications can be built up at a series of sites, such as castles or forts placed near a border. These structures are designed to delay an invasion long enough for the defending nation to mobilize an army of size sufficient for defense or, in some cases, counter-invasion—such as, for example, the Maginot Line. Forts can be positioned so that the garrisons can interdict the supply lines of the invaders. The theory behind these spaced forts is that the invader cannot afford to bypass these defenses, and so must lay siege to the structures.
In modern times, the notion of constructing large-scale static defenses to combat land-based threats has largely become obsolete. The use of precision air campaigns and large-scale mechanization have made lighter, more mobile defenses desirable to military planners. The obsolescence of large fortifications was displayed by the failure of the Maginot Line in the beginning of World War Two. Nations defending against modern invasions normally use large population centers such as cities or towns as defensive points. The invader must capture these points to destroy the defender's ability to wage war. The defender uses mobile armored and infantry divisions to protect these points, but the defenders are still very mobile and can normally retreat. A prominent example of the use of cities as fortifications can be seen in the Iraqi Army's stands in the 2003 invasion of Iraq at Baghdad, Tikrit and Basra in the major combat in the Second Gulf War. A defender can also use these mobile assets to precipitate a counteroffensive like the Soviet Red Army at the Battle of Kursk or the Northern Alliance in Afghanistan.
However, static emplacements remain useful in both defense against naval attacks and defense against air attacks. Naval mines are still an inexpensive but effective way to defend ports and choke off supply lines. Large static air defense systems that combine antiaircraft guns with missile launchers are still the best way to defend against air attacks. Such systems were used effectively by the North Vietnamese around Hanoi. Also, the United States has invested considerable time and money into the construction of a National Missile Defense system, a static defense grid intended to intercept nuclear intercontinental ballistic missiles.
Island nations, such as the United Kingdom or Japan, and continental states with extensive coasts, such as the United States, have utilized a significant naval presence to forestall an invasion of their country, rather than fortifying their border areas. A successful naval defense, however, usually requires a preponderance of naval power and the ability to sustain and service that defense force.
In particularly large nations, the defending force may also retreat in order to facilitate a counterattack by drawing the invaders deeper into hostile territory. One effect of this tactic is that the invading force becomes too spread out, making supply difficult and making the lines more susceptible to attack. This tactic, although costly, helped the Soviets stop the German advance at Stalingrad. It can also cause the invading force to extend too far, allowing a pincer movement to cut them off from reinforcements. This was the cause of the British defeat at the Battle of Cowpens during the American Revolutionary War. Finally, sending too many reinforcements can leave too few defenders in the attackers' territory, allowing a counter-invasion from other areas, as happened in the Second Punic War.
Methods
There are many different methods by which an invasion can take place, each method having arguments both in their favor and against. These include invasion by land, sea, or air, or any combination of these methods.
Invasion by land
Invasion over land is the straightforward entry of armed forces into an area using existing land connections, usually crossing borders or otherwise defined zones, such as a demilitarized zone, overwhelming defensive emplacements and structures. Although this tactic often results in a quick victory, troop movements are relatively slow and subject to disruption by terrain and weather. Furthermore, it is hard to conceal plans for this method of invasion, as most geopolitical entities take defensive positions in areas that are most vulnerable to the methods mentioned above.
In modern warfare, invasion by land often takes place after, or sometimes during, attacks on the target by other means. Air strikes and cruise missiles launched from ships at sea are a common method of "softening" the target. Other, more subtle, preparations may involve secretly garnering popular support, assassinating potentially threatening political or military figures, and closing off supply lines where they cross into neighboring countries. In some cases, those other means of attack eliminate the need for ground assault; the 1945 atomic-bombing of Hiroshima and Nagasaki ultimately made it unnecessary for the Allies to invade the Japanese home islands with infantry troops. In cases such as this, while some ground troops are still needed to occupy the conquered territory, they are allowed to enter under the terms of a treaty and as such are no longer invaders. As unmanned, long-range combat evolves, the instances of basic overland invasion become fewer; often the conventional fighting is effectively over before the infantry arrives in the role of peacekeepers (see "Applications in fourth generation warfare" in this article).
Invasion by sea
Invasion by sea is the use of a body of water to facilitate the entry of armed forces into an area, often a landmass adjoining the body of water or an island. This is generally used either in conjunction with another method of invasion, and especially before the invention of flight, for cases in which there is no other method to enter the territory in question. Arguments in favor of this method usually consist of the ability to perform a surprise attack from sea, or that naval defenses of the area in question are inadequate to repel such an attack. However, the large amount of specialized equipment, such as amphibious vehicles and the difficulty of establishing defenses—usually with a resulting high casualty count—in exchange for a relatively small gain, are often used as arguments against such an invasion method. Underwater hazards and a lack of good cover are very common problems during invasions from the sea. At the Battle of Tarawa, Marine landing craft became hung up on a coral reef and were shelled from the beach. Other landers were sunk before they could reach the shore, and the tanks they were carrying were stranded in the water. Most of the few survivors of the first wave ended up pinned down on the beach. The island was conquered but at a heavy cost, and the loss of life sparked mass protests from civilians in the United States.
Invasion by air
Invasion by air is an invention of the 20th century and modern warfare. The idea involves sending military units into a territory by aircraft. The aircraft either land, allowing the military units to debark and attempt their objective, or the troops exit the aircraft while still in the air, using parachutes or similar devices to land in the territory being invaded. Many times air assaults have been used to pave the way for a ground- or sea-based invasion, by taking key positions deep behind enemy lines such as bridges and crossroads, but an entirely air-based invasion has never succeeded. Two immediate problems are resupply and reinforcement. A large airborne force cannot be adequately supplied without meeting up with ground forces; an airborne force too small simply places themselves into an immediate envelopment situation. Arguments in favor of this method generally relate to the ability to target specific areas that may not necessarily be easily accessible by land or sea, a greater chance of surprising the enemy and overwhelming defensive structures, and, in many cases, the need for a reduced number of forces due to the element of surprise. Arguments against this method typically involve capacity to perform such an invasion—such as the sheer number of planes that would be needed to carry a sufficient number of troops—and the need for a high level of intelligence in order for the invasion to be successful.
The closest examples to a true air invasion are the Battle of Crete, Operation Thursday (the Chindits second operation during the Burma Campaign) and Operation Market Garden. The latter was an assault on the German-occupied Netherlands conducted in September 1944. Nearly 35,000 men were dropped by parachute and glider into enemy territory in an attempt to capture bridges from the Germans and make way for the Allies' advance. However, even with such a massive force taking the Germans completely by surprise, the assault was a tactical failure and after 9 days of fighting the Allies managed only to escape back to their own lines, having sustained over 18,000 casualties. In the 21st century, as vast improvements are made in anti-aircraft defenses, it seems that the air invasion is a strategy whose time may never come.
Pacification
Once political boundaries and military lines have been breached, pacification of the region is the final, and arguably the most important, goal of the invading force. After the defeat of the regular military, or when one is lacking, continued opposition to an invasion often comes from civilian or paramilitary resistance movements. Complete pacification of an occupied country can be difficult, and usually impossible, but popular support is vital to the success of any invasion.
Media propaganda such as leaflets, books, and radio broadcasts can be used to encourage resistance fighters to surrender and to dissuade others from joining their cause. Pacification, often referred to as "the winning of hearts and minds", reduces the desire for civilians to take up resistance. This may be accomplished through reeducation, allowing conquered citizens to participate in their government, or, especially in impoverished or besieged areas, simply by providing food, water, and shelter. Sometimes displays of military might are used; invading forces may assemble and parade through the streets of conquered towns, attempting to demonstrate the futility of any further fighting. These displays may also include public executions of enemy soldiers, resistance fighters, and other conspirators. Particularly in antiquity, the death or imprisonment of a popular leader was sometimes enough to bring about a quick surrender. However, this has often had the unintended effect of creating martyrs around which popular resistance can rally. An example of which was Sir William Wallace, who, centuries after his execution by the English, is still a symbol of Scottish nationalism.
Many factors need to be taken into account when deciding which tactics to use during occupation; when the wrong decisions are made, it can lead to years (or even centuries) of continued resistance. The problems caused by continued resistance may be minimal if the conquered territory is only needed for a short-term tactical purpose, but can become extremely difficult if the intent is to colonize the area or hold the land indefinitely.
Support
Logistics
Without a steady flow of supplies, an invading force will soon find itself retreating. Before his invasion of Greece, Xerxes I spent three years amassing supplies from all over Asia; Herodotus wrote that the Persian army was so large it "drank the rivers dry".
In most invasions, even in modern times, many fresh supplies are gathered from the invaded territories themselves. Before the laws of war, invaders often relied heavily on the supplies they would win by conquering towns along the way. During the Second Punic War, for example, Hannibal diverted his army to conquer cities simply to gather supplies; his strategy in crossing the Alps necessitated traveling with as few provisions as possible, expecting the Roman stores to sustain them when they had breached the border. The scorched earth tactics used in Russia forced Napoleon to withdraw his forces due to lack of food and shelter. Today, the Law of land warfare forbids looting and the confiscation of private property, but local supplies, particularly perishables, are still purchased when possible for use by occupying forces, and airplanes often use parachutes to drop supplies to besieged forces. Even as rules become stricter, the necessities of war become more numerous; in addition to food, shelter, and ammunition, today's militaries require fuel, batteries, spare mechanical parts, electronic equipment, and many other things. In the United States, the Defense Logistics Agency employs over 22,000 civilians with the sole task of logistics support, and 30,000 soldiers graduate from the U.S. Army Logistics Management College each year.
Communication
Another consideration is the importance of leadership being able to communicate with the invasion force. In ancient times, this often meant that a king needed to lead his armies in person to be certain his commands were followed, as in the case of Alexander the Great. At that time, the skills needed to lead troops in battle were as important as the skills needed to run a country during peacetime. When it was necessary for the king to be elsewhere, messengers would relay updates back to the rear, often on horseback or, in cases such as the Battle of Marathon, with swift runners.
When possible, sloops and cutters were used to relay information by sea. The HMS Pickle brought Britain the first news that Nelson had defeated the French forces at the Battle of Trafalgar.
The development of Morse Code, and later voice communications by radio and satellite, have allowed even small units of skirmishers to remain in contact with the larger invasion force, to verify orders or call for artillery support and air strikes. These communications were critical to the German blitzkrieg strategy, as infantry commanders relayed defensive positions to tanks and bombers.
Applications regarding non-state combatants
In the 20th and 21st centuries, questions arose regarding the effectiveness of the invasion strategy in neutralizing non-state combatants, a type of warfare sometimes referred to as "fourth generation warfare". In this case, one or more combatant groups are controlled not by a centralized state government but by independent leadership, and these groups may be made up of civilians, foreign agents, mercenaries, politicians, religious leaders, and members of the regular military. These groups act in smaller numbers, are not confined by borders, and do not necessarily depend on the direct support of the state. Groups such as these are not easily defeated by straightforward invasion, or even constant occupation; the country's regular army may be defeated, the government may be replaced, but asymmetric warfare on the part of these groups can be continued indefinitely. Because regular armed forces units do not have the flexibility and independence of small covert cells, many believe that the concept of a powerful occupying force actually creates a disadvantage.
An opposing theory holds that, in response to extremist ideology and unjust governments, an invasion can change the government and reeducate the people, making prolonged resistance unlikely and averting future violence. This theory acknowledges that these changes may take time—generations, in some cases—but holds that immediate benefits may still be won by reducing membership in, and choking the supply lines of, these covert cells. Proponents of the invasion strategy in such conflicts maintain the belief that a strong occupying force can still succeed in its goals on a tactical level, building upon numerous small victories, similar to a war of attrition.
Contemporary debate on this issue is still fresh; neither side can claim to know for certain which strategies will ultimately be effective in defeating non-state combatants. Opponents of the invasion strategy point to a lack of examples in which occupying or peacekeeping forces have met with conclusive success. They also cite continuing conflicts such as Northern Ireland, Israel, Chechnya, and Iraq, as well as examples which they claim ultimately proved to be failures, such as Lebanon, and Afghanistan. Supporters of the invasion strategy hold that it is too soon to call those situations failures, and that patience is needed to see the plan through. Some say that the invasions themselves have, in fact, been successful, but that political opponents and the international media skew the facts for sensationalism or political gain.
Outcomes
The outcomes of an invasion may vary according to the objectives of both invaders and defenders, the success of the invasion and the defense, and the presence or absence of an agreed settlement between the warring parties. The most common outcome is the loss of territory, generally accompanied by a change in government and often the loss of direct control of that government by the losing faction. This sometimes results in the transformation of that country into a client state, often accompanied by requirements to pay reparations or tribute to the victor. In other cases the results of a successful invasion may simply be a return to the status quo; this can be seen in wars of attrition, when the destruction of personnel and supplies is the main strategic objective, or where a nation previously subdued and currently occupied by an aggressive third party is restored to control of its own affairs (i.e. Western Europe following the Normandy landings in 1944, or Kuwait following the defeat of Iraq in 1991). In some cases, the invasion may be strategically limited to a geographical area, which is carved into a separate state as with the Bangladesh Liberation War in 1971.
Record-setting invasions
Many records for invasions were set during World War II, at the peak of second and third generation warfare. The vast numbers of the armies involved combined with innovative tactics and technology lent themselves to invasions on a scale that had not been seen before.
The largest land invasion in history was 1941's Operation Barbarossa, in which 4,000,000 German troops blitzkrieged into the Soviet Union. Initially the Germans advanced with great ease and nearly captured Moscow, also laying siege to Leningrad, but soon found themselves fighting the harsh Russian winter as well as stiffer Soviet resistance, and their advance ground to a halt at Stalingrad in early 1943.
In the largest amphibious invasion in history, 156,215 Allied troops landed at Normandy to retake France from the occupying German forces. Though it was costly in terms of men and materials, the invasion advanced the Western Front and forced Germany to redirect its forces from the Russian and Italian fronts. In hindsight, the operation is also credited with defining the Western boundary of Soviet communism; had the Allies not advanced, it is conceivable that the Soviet Union would have controlled more of Europe than it eventually did.
Other examples of historically significant invasions
Sargon II, during the course of conquering much of what is now known as the Middle East, defeated the Kingdom of Israel in 722 BC and sent its inhabitants into exile. This presaged future Greek and Roman conquest and, later, the Crusades. To this day, the region remains contested.
Sikh Empire's Invasion Of Afghanistan
In 480 BC, Xerxes I of Persia moved his armies against the loose confederation of city-states in what is modern-day Greece. One of the most famous battles of the war, fought at Thermopylae, is an early example of using a chokepoint to tactical advantage. Although Xerxes' army was vast—modern estimates put it at 250,000—the defending Greeks were able to hold their ground for days by using a narrow mountain pass to slow the Persian advance. The invasion also demonstrates the importance of communication and supply routes; although Xerxes' land battles were almost all Persian victories, the Greeks managed to cut off his naval support and the Persians were forced to withdraw. The invasion served to unify the various city-states, bringing about the formation of the Greek nation.
In 323 BC, Alexander the Great led his army into Persia, defeating Darius III, conquering Babylon, and taking control of the Persian Empire. Alexander's influence in mixing cultures led to the Hellenistic Age of Mesopotamia and North Africa.
The main invasion force under Aulus Plautius sailed in three divisions, and is generally believed to have landed at Richborough in Kent, although parts may have landed elsewhere (see Site of the Claudian invasion of Britain). The army was composed of four legions. The Britons, led by Togodumnus and Caratacus of the Catuvellauni, were reluctant to fight a pitched battle, relying instead on guerrilla tactics. However, Plautius defeated first Caratacus, then Togodumnus, on the rivers Medway and Thames. Vespasian took a force westwards subduing tribes and capturing oppida as he went, going at least as far as Exeter and probably reaching Bodmin. Roman province was established in the conquered territory and Plautius became governor of the new province.
Following the Islamic prophet Muhammad's unification of the Arabian peninsula in 632, his successors, the Caliphs began a series of invasions of the Middle East, North Africa, Southern Europe, and South Asia. Lasting slightly more than a century, these conquests brought much of the ancient world under Arab rule.
In 793 a Viking raid on Christian monastery at Lindisfarne in north-east England caused much consternation throughout the Christian west, and is now often taken as the beginning of the age of Viking raids. Vikings were Scandinavian warriors, pirates and traders who raided the coasts of Britain, Ireland and mainland Europe as far as Al-Andalus and Italy from the late 8th–11th century. They also plundered all the coasts of the Baltic Sea, ascending the rivers of Eastern Europe as far as the Black Sea and Persia.
Magyars were Finno-Ugric (disputed) nomads of western Siberia. Around 896, probably under the leadership of Árpád, some Magyars crossed the Carpathians and entered the Carpathian Basin. After 900, almost every year Magyars led a raid against the Christian West and Byzantine East. In 907, the Magyars defeated Bavarians near Bratislava, destroying their army and laying Great Moravia, Germany, France and Italy open to Magyar raids. These raids were fast and devastating. The Magyars defeated Louis the Child's united Frankish Imperial Army near Augsburg in 910. From 917-925, Magyars raided through Basle, Alsace, Burgundy, Saxony, and Provence. In 937, they raided France as far west as Reims and Italy as far as Otranto in the south. Magyar expansion was checked at the Battle of Lechfeld in 955. Although battle at Lechfeld stopped the Magyar raids against western Europe, the raids on the Byzantine Empire continued until 970.
The 1066 invasion of England by William the Conqueror, and the decisive battle which won the war, the Battle of Hastings, were to have profound effects on the historical and societal development of Britain, and the English language.
In a series of nine different major invasions from 1095 to 1291, the Catholic Church and various European states attempted to liberate the Holy Land for Christendom from its Muslim conquerers, with varied success until the fall of Acre in 1291. As Jerusalem changed hands and European forces moved back and forth, in-roads to the Levant were reestablished and the cultures mixed on a large scale for the first time in centuries.
From 1206 until his death in 1227, Genghis Khan orchestrated a series of invasions that united much of Asia. Relying heavily on cavalry, the Mongol hordes were able to travel quickly yet were well-supplied. The Mongol Empire reached its largest extent by 1279, considered the largest contiguous empire in history, composed of 35 million km² (13.8 million miles²) of territory stretched across the continent, though the empire was already fragmented by this time. His eastward invasion of China created the Yuan Dynasty, and his westward invasion of Kievan Rus' further linked Europe and Asia by reestablishing the Silk Road. Before the Mongol invasion, Chinese dynasties reportedly had approximately 120 million inhabitants; after the conquest was completed in 1279, the 1300 census reported roughly 60 million people.
The 13th century, when the Mongol Empire came to power, is often called the "Age
of the Mongols". Mongol armies expanded westward under the command of Batu Khan. Their western conquests included almost all of Russia (save Novgorod, which became a vassal), half of Hungary, and Poland. Mongolian records indicate that Batu Khan was planning a complete conquest of the remaining European powers, beginning with a winter attack on Austria, Italy and Germany, when he was recalled to Mongolia upon the death of Great Khan Ögedei.
During the late 14th century, Islamic warlord of Turco-Mongol descent Timur the Lame conquered much of western and central Asia. In 1398, Timur invaded India on the pretext that the Muslim sultans of Delhi were too much tolerant to their Hindu subjects. He subjugated Multan and Dipalpur in modern day Pakistan and in modern day India left Delhi in such ruin that it is said for two months "not a bird moved wing in the city".
The last of the Aztec empire was destroyed at Tenochtitlan in 1521, by a combination of Spanish and native forces. Aided by at least 20,000 local Tlaxcalan warriors, Hernán Cortés marched into the city. Although he and his men were expelled, they returned with ships and laid siege to the capital. Though an epidemic of smallpox took its toll on the Aztecs, Cortes' conquest was the culmination of Spanish strategy in the Americas: He used promises to gain native allies, and he combined superior technology with patience while he struck at Tenochtitlan from the sea. This opened the door to Spanish colonization of mainland Mesoamerican cultures.
Japanese invasions of Korea
During the Japanese invasions of Korea (1592-1598), the Japanese warlord Toyotomi Hideyoshi, with the ambition of conquering Ming China, invaded Korea with his daimyo and their troops in 1592 and again in 1597. Japanese prevailed on land, but following several defeats by Korean and Ming China forces and Hideyoshi's death, Japanese troops were withdrawn in 1598.
The fall of the Ming Dynasty was a protracted affair, its roots beginning as early as 1600 with the emergence of the Manchu under Nurhaci. Under the brilliant commander, Yuan Chonghuan, the Ming was able to repeatedly fight off the Manchus, notably in 1626 at Ning-yuan and in 1628. On May 26, 1644, Beijing fell to a rebel army led by Li Zicheng. Seizing their chance, the Manchus crossed the Great Wall after Ming border general Wu Sangui opened the gates at Shanhai Pass, and quickly overthrew Li's short-lived Shun Dynasty. Despite the loss of Beijing and the death of the emperor, Ming power was by no means destroyed. Nanjing, Fujian, Guangdong, Shanxi, and Yunnan were all strongholds of Ming resistance. Each bastion of resistance was individually defeated by the Qing until 1662, when the last real hopes of a Ming revival died with the Yongli emperor, Zhu Youlang. Complete pacification of China would not be complete until 1683. Overall, an estimated 25 million people died during the Manchu conquest of Ming Dynasty.
The Ottoman wars in Europe, also sometimes referred as the Turkish wars, marked an essential part of the history of southeastern Europe. The Ottoman Empire, leading Islamic state at that time, started its westward expansion into the European continent in the middle of the 14th century, until its expansion stopped once it reached and fought Croatia. However the Empire was still at the centre of interactions between the Eastern and Western worlds for next six centuries.
In 1812, Napoleon led his Grande Armée into Russia. At that point, his invasion force of 691,500 men was the largest ever assembled, and for several weeks the Russian Army could do nothing but retreat and try to buy time. The first major battle between the two armies, at the Russian defenses of Borodino, was one of the bloodiest single days in human history, with estimates of at least 65,000 dead. But although the Russian retreat allowed the French to capture Moscow, they were left depleted and without shelter or supplies. Napoleon was forced to withdraw. Although this invasion was not the end of Napoleon, it is credited with fostering a powerful patriotism in Russia that would lead to the strengthening of the nation in the 19th and 20th centuries.
European colonialism and imperialism
In the late 15th century, the Christian nations of Western Europe began the modern age of colonialism with the "Age of Discovery", led by the Spanish colonization of the Americas and Portuguese Empire in the Americas and along the coasts of Africa, the Middle East, India, and East Asia. The Roman Catholic Church played a role in their overseas activities, and the enormous trade profits and riches from gold and silver mines allowed them to finance costly religious wars in Europe. During the 16th and 17th centuries, Britain, France and Holland established their own overseas empires in direct competition with each other as well as the earlier Iberian ones, while the land-based Russian Empire expanded across northern and Central Asia. These activities resulted in the invasions of the Indian subcontinent to set up the extensive European colonies in India, as well as the invasion of Africa called the Scramble for Africa and the colonization of the East Indies. In the late 19th century, the Germans and Italians also joined in, beginning the third wave of invasions that would subdue native peoples and economies, and expand European-controlled territory over the majority of the globe.
Decolonization began in the 19th century and picked up pace only after World War II left the European empires weakened and struggling to subdue the native resistance across the vast expanses of their empires. Debates upon the negative vs. positive impact and evaluation of colonialism and colonization—such as those of colonial Christianization, genocide, third world debt, slavery, abolition of slavery, infrastructures and medical advances —upon the colonizer and the colonized continue to shape global and national politics to this day.
The Eastern Front of the European Theatre of World War II encompassed the conflict in central and eastern Europe from June 22, 1941 to May 9, 1945. It was the largest theatre of war in history in terms of numbers of soldiers, equipment and casualties and was notorious for its unprecedented ferocity, destruction, and immense loss of life. The fighting involved millions of German and Soviet troops along a broad front hundreds of kilometres long. It was by far the deadliest single theatre of World War II. Scholars now believe that as many as 27 million Soviet citizens died during the war, including some 8.7 million soldiers who fell in battle against Hitler's armies or died in POW camps. Millions of civilians died from starvation, exposure, atrocities, and massacres.
The USSR, which had grafted onto the Russian Soviet Federative Socialist Republic several countries that had had short-lived independence (Ukraine, Georgia, Armenia, Azerbaijan, and the lands of Central Asia), never reconciled itself to having lost West Ukraine, West Belarus, Bessarabia, and the three Baltic states (territories which formerly belonged to the Russian Empire) in the course of 1919-21. Thus they aimed to annex these territories as well as to obtain a buffer zone from Finland in 1939-40 (see Soviet-Finnish War). After the Soviet invasion of Poland following the corresponding German invasion that marked the start of World War II in 1939, the Soviet Union annexed eastern parts (so-called "Kresy") of the Second Polish Republic (see Molotov-Ribbentrop Pact). In 1940 the Soviet Union annexed Estonia, Latvia, Lithuania, Bessarabia and Bukovina (see Occupation of Baltic states).
During the Cold War, the term Eastern Bloc (or Soviet Bloc) was used to refer to the Soviet Union and countries it controlled in Central and Eastern Europe (Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, Romania). Hungary was invaded by the Soviet Army in 1956 after it had overthrown its pro-Soviet government and replaced it with one that sought a more democratic communist path independent of Moscow; when Polish communist leaders tried to elect Wladyslaw Gomulka as First Secretary they were issued an ultimatum by Soviet military that occupied Poland ordering them to withdraw election of Gomulka for the First Secretary or be "crushed by Soviet tanks". Czechoslovakia was invaded in 1968 after a period of liberalization known as the Prague Spring. The latter invasion was codified in formal Soviet policy as the Brezhnev Doctrine. In 1979 the Soviet Union invaded Afghanistan to ensure that a pro-Soviet regime would be in power in the country (see Soviet war in Afghanistan). Poland was afraid of getting invaded by the USSR during the early 1980s due to the strikes associated with solidarity which called for an end to the communist government there.
See also
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