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The Decisive Battles of World History

Examine the military encounters that most profoundly affected history in this sweeping course that spans from chariot battles in ancient Egypt to modern conflicts.
The Decisive Battles of World History is rated 4.7 out of 5 by 155.
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Rated 5 out of 5 by from One of the best professors My husband and I so much enjoy the teaching of Dr. Aldrete. He is wonderful, so informative and engaging. Please can we have more courses from Dr. Aldrete?
Date published: 2023-01-21
Rated 5 out of 5 by from Interesting Compilation I enjoyed Professor Aldrete's Decisive Battles very much. The battles were reviewed in chronological order and for each one Professor Aldrete set up the specifics of history, participants and political climate at the time. Each battle was illustrated with positions, size of each army, terrain, weapons and leaders. Relevant personalities were also identified as well as strategies and possible mistakes. After each battle, he explained why he included the battle in his list of thirty-six decisive battles. This was a very informative course.
Date published: 2022-06-14
Rated 5 out of 5 by from Enlightening Dr Aldrete presents his lectures in a concise and entertaining way. Most of the battles he describes, I doubt, many people have heard about; very few were included in my history lessons. He lays out the salient facts of the origin, actions and results of each battle. He doesn't clog the stories with excessive detail. I highly recommend this course.
Date published: 2022-04-02
Rated 5 out of 5 by from Interesting Lectures on a Specialty Topic. Primary reason to listen/watch these lectures: You have no prior knowledge of Military History but want to learn something about that topic, perhaps for the only time. OR: You already have an interest in Military History and want to delve deeper into this specific area. This lecture series works well for both novice and intermediate Military History knowledge individuals. Primary reason not to listen/watch this course: You feel that you already know enough about the topic to make your own list of the decisive battles of history [and you won't like it if his list doesn't match yours]. OR: You just aren't interested in Military History in any way. Dr. Aldrete is easy to listen to and it is easy to follow his narrative of events. This series presents very well in an audio only manner. The nature of the topic is such that one need not worry about a complex analysis of presented "facts" or the need to understand a concept before progressing to the next stage of discussion. His style of presentation is enjoyable and kept my attention. In this series, you can learn about famous individuals and events from the past about which you likely have heard, but otherwise have little knowledge of. You can learn about people whom you haven't heard of at all. Learn about locations that you didn't know existed. Find out why those people and events have affected millions of other humans. Each lecture seems about right in its structure. He discusses the historical individuals and/or organizations involved, why those individuals/organizations came into conflict, how the conflict unfolded in time, and how a specific battle and the involved individuals influenced history. The specific battles chosen for this lecture series is by nature subjective. This is directly addressed by Dr. Aldrete at the beginning of the lectures. He acknowledges that such a list will most certainly be different from lists compiled by others. This is his list. As such, I don't understand criticism by some reviewers that his list of battles is not the same as a list they would compile.
Date published: 2022-03-18
Rated 5 out of 5 by from Terrific course! Prof. Aldrete does an outstanding job in this course in selecting the most decisive battles in world history and presenting and defending those choices in 36 well-crafted and highly entertaining lectures. He structures each lecture in essentially the same way: first, necessary background on the conflict and the participants, next, the movement by movement description of the critical action in the battle, and last, the outcome of the battle and why it is of major decisive impact. He readily recognizes that others may choose differently, but he makes a compelling case for his choices, and I found each lecture great food for thought. His passion and enthusiasm for this subject matter is obvious, and his joy in presenting the material is infectious. The video version is a must for this one. Highly recommended!
Date published: 2022-02-17
Rated 3 out of 5 by from An academic survey with fine level of detail The tone of the course is of amusing trivia, which was a little irritating and grew more so as the course went on (six discs). The presenter does not seem to have any exposure to the military himself and uses highly expressive gestures that were a little distracting. I felt there was too much depth and detail given to the subject matter, and each battle could be given 15 to 20 minutes instead of 30+. A bit of a chore to get through.
Date published: 2022-01-20
Rated 5 out of 5 by from An Informative History of Military Strategy The Decisive Battles of World History is a series of 36 lectures provided by Professor Gregory S. Aldrete, on what he has concluded are the military battles that have, more or less, changed the course of world history. These battles may have had a significant impact on such things as the development or, conversely, the elimination of certain civilizations and/or religions; the promotion of certain technologies, or the progressing of certain cultures. Whatever the reason, these battles are those, as the professor admits, that he has personally determined have made the world, be it good or bad, what it is today. In doing this, he explains what makes a battle decisive in his first lecture, and continues on beginning in 1274 B. C. with a battle of chariots in Kadesh near the modern Lebanon-Syrian border to post World-War II battles in Israel and Viet Nam. This course took me an interminable amount of time to complete, and it isn't because the lectures weren't interesting, but because there were so many of them. I believe that if I would have listened to the lectures and read the course book in a more timely fashion, I would have been better rewarded and been more knowledgeable about this subject. As it was, I had a hard time remembering some of the first battles, and their ramifications on later battles in history. This is why Professor Aldrete suggests that we try doing the What If? test on some some of these battles. As an example, even though Stalingrad may have been the turning point for Germany in the Second World War, regardless of the D-Day landings (if you don't believe that, look at the numbers), what if D-Day would never have happened? What, as a result, would Russia have done to the rest of Europe as it continued to march through Germany if the Allies had not landed at Normandy? These are the type of questions Professor Aldrete makes us think about and ponder. Consequently, it becomes, not only, a course on world history, but a course on world introspection for not only mankind today, but for the world as a whole. As a result, the further I continued through this course, the more I understood what Professor Aldrete was trying to communicate with his students. There are many times we have heard that if we don't learn the lessons of history, we are inclined to make the same mistakes. I believe that the professor has most certainly proven this point in these lectures, and, consequently, it is one that everyone should watch to not only see how the course of history was changed because of a few battles, but, in addition, how the mistakes or successes that occurred have made us what we are today. I believe the only thing that bothered me about this series related to how certain people see military strategy and its eventual outcome insensitively. I believe in many cases, these battles were almost viewed as a board game without really considering the personal ramifications of each individual soldier/victim. And maybe this is the weakness of world leaders in deciding whether to go to war. There are too many people that see an 18 year old soldier who has their whole life ahead of them as just a marker on a board, and they don't see the potential of what that person could do in the future. In thinking about the battle in Stalingrad between Germany (Hitler) and Russia (Stalin), the losses cannot even be fathomed considering that Germany lost 11 million troops and Russia lost 23 million during that war, and all those young men were was a marker on a map. I guess if we want to know what a soldier really experiences, we read novels like All Quiet on the Western Front, or see movies like Saving Private Ryan. Nevertheless, Professor Aldrete is an excellent lecturer. He is very interesting and easy to understand with no, a least that I noticed, annoying mannerisms. Overall, I consider the course a great one (The Great Courses!), and well worth taking the time to listen to.
Date published: 2021-09-30
Rated 4 out of 5 by from Very Interesting! The presentation and content are very interesting. The course is long (36 lectures), and after a while one decisive battle starts to sound like others, but it is really well done.
Date published: 2021-06-24
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Discover the military conflicts that have had the greatest impact in shifting the direction of historical events and shaping our world in The Decisive Battles of World History. Covering nearly 4,000 years of history, this course explores more than three dozen history-making military engagements, from the landmark battles of the Western world to their counterparts across Asia, India, and the Middle East. These 36 dynamic lectures by Professor Gregory S. Aldrete feature vital historical background, vivid accounts of the campaigns themselves, and a thorough look at their influence on the unfolding of history.


Gregory S. Aldrete

As an ancient historian, my goals are to share the enthusiasm for and fascination with antiquity that I feel, and to show some of the connections between that world and our own.


University of Wisconsin, Green Bay

Dr. Gregory S. Aldrete is Professor of Humanistic Studies and History at the University of Wisconsin, Green Bay, where he has taught since 1995. He earned his B.A. from Princeton University and his master's degree and Ph.D. in Ancient History from the University of Michigan. Honored many times over for his research and his teaching, Professor Aldrete was named by his university as the winner of its highest awards in each category, receiving both its Founders Association Award for Excellence in Scholarship and its Founders Association Award for Excellence in Teaching. That recognition of his teaching skills was echoed on a national level in 2009, when he received the American Philological Association Award for Excellence in the Teaching of Classics at the College Level-the national teaching award given annually by the professional association of classics professors. The recipient of many prestigious research fellowships including five from the National Endowment for the Humanities, Professor Aldrete has published several important books in his field, including Gestures and Acclamations in Ancient Rome; Floods of the Tiber in Ancient Rome; Daily Life in the Roman City: Rome, Pompeii, and Ostia; The Greenwood Encyclopedia of Daily Life I: The Ancient World (as editor); Unraveling the Linothorax Mystery: Reconstructing and Testing Ancient Linen Body Armor (with S. Bartell and A. Aldrete) and The Long Shadow of Antiquity: What Have the Greeks and Romans Done for Us (with A. Aldrete).

By This Professor

History's Great Military Blunders and the Lessons They Teach
The Decisive Battles of World History
The Roman Empire: From Augustus to The Fall of Rome
The Rise of Rome
A Historian Goes to the Movies: Ancient Rome
History of the Ancient World: A Global Perspective
The Decisive Battles of World History


What Makes a Battle Decisive?

01: What Makes a Battle Decisive?

Contemplate the ways in which warfare can change the course of historical events. Examine the factors that make a military battle "decisive," such as its role in transfers of power and its social and political effects, and consider the study of battles as an analytical tool for understanding history.

33 min
1274 B.C. Kadesh-Greatest Chariot Battle

02: 1274 B.C. Kadesh-Greatest Chariot Battle

The battle of Kadesh ushered in an unprecedented era of peace in the ancient Near East. Follow the strategy and tactics of the Egyptian and Hittite armies, featuring each side's distinctive war chariots. Trace the unusual sequence of battlefield events that led to a remarkable treaty, an important forerunner of peaceful diplomacy.

32 min
479 B.C. Plataea-Greece Wins Freedom

03: 479 B.C. Plataea-Greece Wins Freedom

In the 479 B.C. battle of Plataea, Greek "hoplite" forces fighting in phalanxes met the mighty army of the Persian superpower. Study the unfolding of this dramatic engagement, and learn how it ended the Persian threat to Greece and allowed for the flowering of Greece's cultural Golden Age.

32 min
331 B.C. Gaugamela-Alexander's Genius

04: 331 B.C. Gaugamela-Alexander's Genius

The victory of Alexander at Gaugamela resulted in the spread of Greek culture throughout the Macedonian Empire. Trace Alexander's campaign against the Persians, which led to the battle, and his bloody confrontation with the Persian forces, and grasp the brilliant maneuvers that allowed him to overcome his foe's significant advantages on the battlefield.

34 min
197 B.C. Cynoscephalae-Legion vs. Phalanx

05: 197 B.C. Cynoscephalae-Legion vs. Phalanx

In 197 B.C., two rival military systems clashed. Learn about the forces of Philip V of Macedon, with their phalanx system; the legacy of Alexander; and the up-and-coming Romans with their "manipular" army based in flexible subunits of soldiers. Assess the far-reaching effects of the battle and its consequences for world history.

33 min
31 B.C. Actium-Birth of the Roman Empire

06: 31 B.C. Actium-Birth of the Roman Empire

This great naval battle resulted from conflict within republican Rome. Follow the intense rivalry between Mark Antony and Octavian for domination of Rome, leading to the fateful events of the confrontation, and observe how it marked the end of the Roman Republic and the beginning of the Roman Empire.

31 min
260-110 B.C. China-Struggles for Unification

07: 260-110 B.C. China-Struggles for Unification

The wars of the 3rd and 2nd centuries B.C. were crucial in forging the later history of China. Study the military technology of the ancient Chinese and the conflicts through which the first Qin and Han emperors welded together a group of antagonistic kingdoms, creating a united China.

32 min
636 Yarmouk & al-Qadisiyyah-Islam Triumphs

08: 636 Yarmouk & al-Qadisiyyah-Islam Triumphs

In these dramatic conflicts, the Islamic Rashidun armies toppled two long-established empires. Learn about their defeat of the Byzantine army at Yarmouk and the Sassanid forces at al-Qadisiyyah, which determined the cultural, linguistic, and religious nature of the Middle East for the next 1,500 years.

32 min
751 Talas & 1192 Tarain-Islam into Asia

09: 751 Talas & 1192 Tarain-Islam into Asia

This lecture explores military engagements between widely differing cultures. Learn about the 751 battle between the Chinese Tang forces and the Abbasid Caliphate, which altered the religious orientation of central Asia. Then follow the 1192 clash between the Indian Rajputs and a Turkish Islamic army, and its permanent effects on Indian culture.

30 min
1066 Hastings-William Conquers England

10: 1066 Hastings-William Conquers England

The Battle of Hastings changed the course of both English and world history. Here, encounter the redoubtable figure of William the Conqueror and his 1066 invasion of England to claim the crown. Witness the terrible engagement at Hastings and its outcome, orienting England away from Scandinavian influence and toward Europe.

30 min
1087 Hattin-Crusader Desert Disaster

11: 1087 Hattin-Crusader Desert Disaster

The religious and cultural effects of the Christian Crusades are still felt in today's world. Study the origins of the Crusades and the events leading to the fateful confrontation at Hattin between Islamic and Christian forces, which critically altered the course of the wars.

31 min
1260 Ain Jalut-Can the Mongols Be Stopped?

12: 1260 Ain Jalut-Can the Mongols Be Stopped?

Now, envision a militaristic society that threatened nearly all the civilizations of Asia and Europe. Study the rise of the Mongols, their terrifying conquests, and their astounding military expertise. Witness their clash in 1260 with the Egyptian Mamluks, a rare Mongol defeat that effectively halted their Western expansion.

30 min
1410 Tannenberg-Cataclysm of Knights

13: 1410 Tannenberg-Cataclysm of Knights

This 15th-century conflict pitted the armies of Poland and Lithuania against the fearsome Germanic order of the Teutonic Knights. Learn about the political background of the bloody confrontation at Tannenberg, the harrowing events on the battlefield, and the deep symbolic significance of the battle that still echoes today.

29 min
Frigidus, Badr, Diu-Obscure Turning Points

14: Frigidus, Badr, Diu-Obscure Turning Points

This lecture discusses battles that have had extremely important effects, though information about the specific events involved is scanty. Consider the battles of the Frigidus River and Badr, both vital turning points for world religions, and that of Diu, which marked the moment when Europe began its rise to world domination.

30 min
1521 Tenochtitlan-Aztecs vs. Conquistadors

15: 1521 Tenochtitlan-Aztecs vs. Conquistadors

The 16th-century Spanish conquest of the Americas resulted in some of the most unusual military encounters of all time. Here, learn about the campaign under Hernán Cortés to conquer Mexico, and how fewer than 1,000 Spaniards defeated the mighty Aztec Empire, which possessed armies comprising tens of thousands of warriors.

30 min
1532 Cajamarca-Inca vs. Conquistadors

16: 1532 Cajamarca-Inca vs. Conquistadors

Continue with Spain's campaign against the vast and highly organized Inca Empire. Follow the daring maneuvers of the forces under Francisco Pizarro, aided by European military technology and including the kidnap and ransom of the Incan emperor, which enabled 190 men to vanquish an army of 40,000.

30 min
1526 & 1556 Panipat-Babur & Akbar in India

17: 1526 & 1556 Panipat-Babur & Akbar in India

Two highly significant 16th-century battles were fought at the Indian town of Panipat. Learn about the rise of the Mughal emperors and the military clashes that first opened the door to their advance into India and then solidified their control, establishing a dynasty that would last for centuries.

31 min
1571 Lepanto-Last Gasp of the Galleys

18: 1571 Lepanto-Last Gasp of the Galleys

The conquests of the Ottoman Turks led to the largest naval battle of the Renaissance. Trace the formation of the Holy League, an alliance of Christian powers against the raiding Ottomans; follow the events leading to Lepanto; and study the dramatic naval engagement that ended Turkish incursions into the maritime outposts of Christendom.

31 min
1592 Sacheon-Yi's Mighty Turtle Ships

19: 1592 Sacheon-Yi's Mighty Turtle Ships

These great naval conflicts left deep imprints on two nations. Chart the 1592 Japanese conquest of Korea, the remarkable naval technologies involved, and the stunning victories of Korean admiral Yi Sun-shin, whose strategic actions defeated two invasions and established him as one of the greatest admirals of all time.

30 min
1600 Sekigahara-Samurai Showdown

20: 1600 Sekigahara-Samurai Showdown

In this monumental episode of the samurai era, learn about the underlying politics and the major figures in the conflict, including one whose wavering loyalty took an astonishing turn on the battlefield. Track the events that unified Japan under a dynasty of shoguns who would rule for 250 years.

30 min
1683 Vienna-The Great Ottoman Siege

21: 1683 Vienna-The Great Ottoman Siege

The Ottoman campaign to capture Vienna was one of the largest and most significant in Ottoman history. Study the background of the siege and the military technology and strategy on both sides. Follow the unfolding engagement and the pivotal role of the Polish-Lithuanian armies, and grasp how Vienna marked a turning point for the Ottoman Empire.

30 min
1709 Poltava-Sweden's Fall, Russia's Rise

22: 1709 Poltava-Sweden's Fall, Russia's Rise

In the 17th century, Sweden emerged as the most powerful state in northern Europe. Learn about Swedish king Charles XII, his ambition to conquer Russia, and his opponent, the resourceful and determined Tsar Peter I. Witness the Swedish invasion and the battlefield events that constituted a reversal of fortunes for the two countries.

31 min
1759 Quebec-Battle for North America

23: 1759 Quebec-Battle for North America

This key incident in the Seven Years War between England and France critically shaped the future of North America. Discover the conflict through the eyes of the opposing commanders as the British assault Quebec City. Observe the remarkable serendipity favoring the British in the engagement, leading to an outcome with historic political effects.

30 min
1776 Trenton-The Revolution's Darkest Hour

24: 1776 Trenton-The Revolution's Darkest Hour

In late 1776, the rebellion of the American colonists appeared to be heading for dismal failure. Here, uncover the dramatic events that were the pivot point of the war. Learn how George Washington, in two critical battles, undertook bold actions to surprise and outwit the British, saving and revitalizing the revolutionary movement.

29 min
1805 Trafalgar-Nelson Thwarts Napoleon

25: 1805 Trafalgar-Nelson Thwarts Napoleon

In 1805, after subduing much of Europe, Napoleon Bonaparte turned his sights on England. Study the events leading to the largest naval battle of the age, as Napoleon's combined French and Spanish fleet met the British navy under Admiral Horatio Nelson. Witness the monumental engagement, marking the beginning of Napoleon's decline.

30 min
1813 Leipzig-The Grand Coalition

26: 1813 Leipzig-The Grand Coalition

In this massive clash, a coalition of seven European powers united to oppose Napoleon. Trace the preliminary military actions culminating at Leipzig, where four armies finally converged on Napoleon's forces. Follow the complex unfolding of the battle and the incident that transformed it into an outright disaster for the French.

31 min
1824 Ayacucho-South American Independence

27: 1824 Ayacucho-South American Independence

The early 19th century saw the rise of numerous independence movements in Central and South America. Learn about three key leaders who were prominent in these struggles; their bold plan to liberate Peru; and the showdown on the plain of Ayacucho that ended Spanish rule in Latin America.

31 min
1836 San Jacinto-Mexico's Big Loss

28: 1836 San Jacinto-Mexico's Big Loss

First, encounter the larger-than-life commanders of this extraordinary action, Sam Houston and Antonio Lopez de Santa Anna. Track the tensions between the Mexican government and the province of Texas, resulting in the 18-minute battle that gained Texas independence and led to the United States acquiring nearly one-third of its continental territory.

30 min
1862 Antietam-The Civil War's Bloodiest Day

29: 1862 Antietam-The Civil War's Bloodiest Day

At the time of this landmark battle in the American Civil War, the Confederacy seemed poised to achieve its goal of independence. Envision the protracted, bloody struggle between North and South, and consider the ways in which a marginal Union victory nevertheless altered the course of the war.

30 min
1866 Koniggratz-Bismarck Molds Germany

30: 1866 Koniggratz-Bismarck Molds Germany

The historic engagement at Königgrätz brought a united Germany into being. Assess the opposing Prussian and Austrian forces, and track the Prussian initiative to capture the German-speaking states allied with Austria. Follow the unfolding battle blow by blow, and grasp how easily Prussia's crushing victory could have ended as a disastrous defeat.

30 min
1905 Tsushima-Japan Humiliates Russia

31: 1905 Tsushima-Japan Humiliates Russia

A modern Japanese naval force stunned the world in this history-making battle. Learn about Japan's 19th-century industrialization and militarization, its conflict with an expansionist Russia, and the maritime confrontation that radically altered the Western perception of Japan, signaling its entrance onto the global stage as a major power.

31 min
1914 Marne-Paris Is Saved

32: 1914 Marne-Paris Is Saved

This providential clash critically shaped World War I. Study the German and French preparations for warfare and vital errors in planning by each side. Follow the offensive that began the war, the German commander's fateful change of plans, and the ensuing battle that left both sides enmeshed in a horrifying, four-year stalemate.

28 min
1939 Khalkin Gol-Sowing the Seeds of WWII

33: 1939 Khalkin Gol-Sowing the Seeds of WWII

Here, an obscure battle in Mongolia produced global effects. Track the tensions between Russia and Japan that led to a bloody border conflict that neither side had sought. Grasp how this one event directly contributed to both the outbreak of war in the Pacific and Europe and the outcome of the war itself.

31 min
1942 Midway-Four Minutes Change Everything

34: 1942 Midway-Four Minutes Change Everything

The advent of aircraft carriers brought a significant new era in naval warfare. Witness the most dramatic and pivotal of the "carrier versus carrier" battles, where the events of a short span of minutes permanently tilted the balance of power in the Pacific to the United States.

30 min
1942 Stalingrad-Hitler's Ambitions Crushed

35: 1942 Stalingrad-Hitler's Ambitions Crushed

Chart the German invasion of Russia at the height of the war in Europe, which massed the full force of Hitler's war machine. Follow the clash of the seemingly invincible German panzer units with the Red Army and the Russian winter, which ended the ascendancy of Nazi Germany.

30 min
Recent & Not-So-Decisive Decisive Battles

36: Recent & Not-So-Decisive Decisive Battles

In concluding the course, take a keen look at what may be some of the historically decisive battles of the six decades following World War II. Finally, consider two famous conflicts often thought to be among the most decisive of all time, and see how careful analysis casts doubt on that conclusion.

39 min