Nazi Invasion of Eastern Europe, The: The History of Hitler’s Blitzkrieg to the East

Astronomy across the Ancient World: The History of Astronomical and Astrological Observations from the Near East to Rome

Spartacus and Crassus: The Leaders of the Third Servile War

Neo-Assyrians, The: The History of the Iron Age’s Most Powerful Empire

Height of the Cold War, The: The History of the Events that Brought the Soviet Union and United States to the Brink

Start of the Cold War, The: The History of the Burgeoning Rivalry Between the United States and Soviet Union

From Republic to Empire: The History of Ancient Rome’s Political Transformation in the 1st Century B.C.

Battle for Iberia, The: The History of the Conflict Between the Moors and Catholics in Medieval Spain

Greco-Roman Astronomy: The History of the Scientific Advances Made in Cosmology by the Ancient Greeks and Romans

Dieppe and D-Day: The Controversial History of the Allies’ Amphibious Operations across the English Channel

World’s Most Notorious Fires, The: The History of the Most Destructive Blazes across the Globe

America’s Most Notorious Fires: The Deadliest Blazes in American History

Abraham Lincoln’s Greatest Speeches: The History of the Addresses that Changed America

Most Infamous Terrorist Groups of the 21st Century, The: The History of the Organizations Behind This Century’s Deadliest Attacks

World’s Most Notorious Serial Killers, The: The Lives and Crimes of History’s Most Infamous Murderers

America’s Most Notorious Natural Disasters

Ancient Spartan and Roman Militaries, The: The History of Antiquity’s Most Influential Armies

Berlin Wall, The: The History and Legacy of the World's Most Notorious Wall

Berlin Airlift and Berlin Wall, The: The History and Legacy of the Fight Over the Occupied City during the Cold War

French Invasion of Russia and the Battle of Leipzig, The: The History and Legacy of the Defeats that Forced Napoleon into Exile at Elba

Partition of India and the British Mandate of Palestine, The: The Controversial History of Great Britain’s Post-War Partition Plans and the Aftermath

Worst Nuclear Meltdowns of the Cold War, The: The History of the Biggest Nuclear Disasters in the United States and Soviet Union

Golden Era of Hollywood’s Most Famous Couples, The: The History of Tinseltown’s Legendary Romances

Japan and World War II: The History of the Imperial Japanese Empire during the War

America’s Most Famous Natural Wonders

Most Famous Walls of Antiquity, The: The History of the Ancient World’s Greatest Defensive Fortifications

Greatest Generals of the Roman Republic, The: The History of the Military Leaders Who Led the Rise of Rome

Hinduism and Buddhism: The History of Ancient India’s Most Influential Religions

France in the Early Middle Ages: The History of the Dynasties that Brought about the Kingdom of France

Carolingians and the Moors, The: The History of the Kingdoms that Fought for Control of Western Europe in the Middle Ages

The History and Legacy of Germany’s Most Controversial Events Between World War I and World War II

Nazi Germany and World War II: The History of Hitler’s War Machine during the World’s Deadliest Conflict

United States in World War II, The: The History and Legacy of American Involvement in the War

World War II in 1943: The History of the Pivotal Year that Saw the Allies Begin to Push Back the Axis Powers

Great Britain and World War II: The History and Legacy of the British in the War

Germany and the World Wars: The History and Legacy of the Germans’ Participation in History’s Biggest Conflicts

Japan in the World Wars: The History of the Imperial Japanese Empire during World War I and World War II

Biggest Battles of the Eastern Front during World War II, The: The History of the Most Epic Battles Between the Soviet Union and Nazi Germany

After Apollo: The History of NASA’s Missions Since Landing on the Moon

Napoleonic Wars, The: The History of the Conflicts that Shaped Europe in the 19th Century

Skylab and the International Space Station: The History of the World’s Most Important Space Research Labs

German Tanks in the World Wars: The History of Germany’s Most Famous Tanks during Both Conflicts

Biggest Tank Battles of the World Wars, The: Tank Warfare in History’s Deadliest Conflicts

Chernobyl and Kyshtym: The History of the Soviet Union’s Biggest Nuclear Disasters

The American Revolution and French Revolution

Kings of Babylon, The: The History of the Different Dynasties that Ruled Ancient Mesopotamia’s Greatest City

Famous Campaigns of World War I, The: The History of the Great War’s Most Important Battles

Rome’s Conquest of Western Europe: The History of the Campaigns that Expanded the Roman Empire across the Continent

Aftermath of World War II, The: The Political, Legal, and Technological Ramifications of History’s Deadliest Conflict

Innovations of World War I, The: The History of the Technological Advances that Defined the Great War

The Appeasement of Nazi Germany

The Roman Empire and Byzantine Empire

NASA’s Deadly Accidents

Fall of Rome and Constantinople, The: The History of the Attacks that Destroyed the Western Roman Empire and Byzantine Empire

Ending the World Wars: The History of the Events and Battles that Finished World War I and World War II

Fighting in Flanders Fields, The: The History of the Major Battles across the Region during World War I

Apollo 1 and the Space Shuttle Challenger: The History of NASA’s Two Most Notorious Disasters

NASA’s Deadly Accidents

Moctezuma II and Tupac Amaru II: The Lives and Legacies of Latin America’s Most Famous Indigenous Leaders

Warfare in Ancient Greece: The History of the Greeks’ Wars on Land and Sea in Antiquity

Ancient and Medieval Warfare in the West: The History of Western Europe’s Changing Military Tactics in Antiquity and the Middle Ages

World War II in 1945

World War II in 1944: The History of the War’s Penultimate Year

Sulla and Caesar: The History of the Roman Republic’s Final Dictators

Crusades in Europe, The: The History of the Catholic Crusaders’ Campaigns against the Ottomans and Christians across the Continent

The Biggest Amphibious Operations of the World Wars

Rome’s Best Emperors: The History and Legacy of the Roman Empire’s Most Able Leaders

Pacific Theater in 1942, The: The History of the Decisive Campaigns and Battles that Helped America Turn the Tide of World War II

End of the Julio-Claudian Dynasty in Rome, The: The History of Nero’s Reign and the Year of the Four Emperors

Cochise and Geronimo: The Lives and Legacies of the Most Famous Apache Warriors

Challenger and Columbia: The History of the Space Shuttles that Suffered Deadly Disasters

Civil Wars of the Late Roman Republic, The: The History of the Conflicts that Made Sulla and Caesar the Dictators of Rome

First Triumvirate, The: The History of the Men Who Led Rome Near the End of the Republic

Starting a World War: The History of the Events and Battles that Began World War I and World War II

Caesar’s Civil War: The History of the Conflict against Pompey the Great that Ended the Roman Republic

Yuri Bezmenov and Anatoliy Golitsyn: The Controversial History of the Soviet Union’s Most Impactful Defectors

Wars that Forged Ancient Rome, The: The History of the Military Campaigns that Established Antiquity’s Greatest Empire

FBI’s Most Controversial Operations, The: The History of the Federal Bureau of Investigation’s Notorious Activities in the 20th Century

Ancient Rome’s Most Important Civil Wars: The History of the Conflicts that Destroyed the Roman Republic and Split the Roman Empire

Anglo-Ashanti Wars and the Anglo-Zulu War, The: The History of the British Empire’s Costliest Campaigns against Indigenous Africans

The Largest Amphibious Campaigns of World War II

European Imperialism in China: The History and Legacy of the European Powers’ Attempts to Establish Chinese Trade Routes

The Fathers of the Soviet Union

Erwin Rommel and the Afrika Korps: The History of Nazi Germany’s Most Famous Commander and Army during World War II

General Douglas MacArthur and Admiral Chester W. Nimitz: The Lives and Careers of America’s Commanders-in-Chief in the Pacific Theater during World Wa

Admiral Horatio Nelson’s Greatest Victories

Modern Germany: The History and Legacy of the German Nation from Unification to Reunification

Famous Landmarks of Ancient Rome

Catholic Church’s Most Influential Religious Military Orders, The: The Controversial and Mysterious History of the Knights Templar, the Teutonic Knigh

Rise and Fall of the Third Reich, The: The History and Legacy of Nazi Germany under Adolf Hitler

Julio-Claudian Dynasty, The: The History and Legacy of the First Family to Rule the Ancient Roman Empire

Liberation of Western Europe in World War II, The: The History of the Western Allies’ Campaigns on the Continent

World War II in 1942: The History of the Year the Allies Turned the Tide Against the Axis

World War II in 1941: The History of the War’s Most Pivotal Year

Island Hopping across the Pacific Theater in World War II: The History of America’s Victorious Leapfrogging Strategy against Imperial Japan

Germany vs. Great Britain in the Air: The History of the Enemy Air Forces in World War I and World War II

Grande Armée and Wellington’s Scum, The: The History and Legacy of the French and British Armies during the Napoleonic Wars

German Air Force during the World Wars, The: The History of the Imperial German Air Service and the Luftwaffe

Roman Empire, The: The History and Legacy of the Ancient World’s Most Famous Empire from Julius Caesar to Its Collapse

World War II in 1940: The History of the Fighting that Culminated with the German Conquest of Western Europe and the Battle of Britain

Race for Nuclear Weapons during World War II, The: The History and Legacy of Both Sides’ Efforts to Build an Atomic Bomb

Roman Civil Wars of the 3rd and 4th Centuries, The: The History of the Conflicts that Led to a Split of the Roman Empire

Biggest Battles of the Pacific Theater, The: The History of the Decisive Campaigns that Led to Victory Over Japan in World War II

Great Patriotic War, The: The History of the Fighting Between the Soviets and Germans during World War II

Ely Samuel Parker and Stand Watie: The Life and Legacy of the Civil War’s Most Famous Native American Officers

Steppe Nomads, The: The History of the Different Nomadic Groups and Their Raids into Europe

Ottoman Empire’s Greatest Victories, The: The History and Legacy of the Most Important Battles Won by the Ottomans

Nazi Germany’s Conquest of Western Europe: The Negotiations and Campaigns that Let Hitler Conquer the Continent Before and During World War II

German Invasions of France during the World Wars, The: The History of Germany’s Campaigns in World War I and World War II

End of World War II, The: The History of the Battles that Ended the Fighting in Europe and the Pacific

Allied Invasions of France in 1944, The: The History and Legacy of the Campaigns that Began the Liberation of Western Europe from the Nazis

Napoleon’s Worst Defeats: The History and Legacy of the Battles that Stalled France’s Expansion and Forced the Emperor’s Abdication

British Intelligence in the World Wars: The History and Legacy of Britain’s Covert Activities during Both Conflicts

Napoleon Bonaparte’s Most Decisive Land Battles: The History of Austerlitz, the French Invasion of Russia, Leipzig, and Waterloo

Start of World War II in the Pacific Theater, The: The History of the Attack on Pearl Harbor, the Doolittle Raid, and the Philippines Campaign of 1941

Imperial Germany’s Invasions of France: The History of the German Invasions in the Franco-Prussian War and World War I

Special Operations Executive and the Office of Strategic Services, The: The History of the British and American Intelligence Agencies during World War

Rise of Fascism in Europe, The: The History of the Fascist Takeovers in Nazi Germany, Italy, and Spain during the 20th Century

Fighting for Jerusalem: The History of the Most Important Battles and Sieges for Control of the World’s Holiest City

Biggest Tank Battles of World War II, The: The History of the Most Decisive Tank Encounters between the Allies and Axis

Start of the Thirty Years’ War, The: The History and Legacy of the Early Battles that Began the Deadly Conflict

The History and Legacy of the Greatest Battles of the Napoleonic Wars

Medieval Invasions of Italy, The: The History and Legacy of the Conflicts across the Italian Peninsula in the Middle Ages

Fighting in World War I: The History and Legacy of Warfare during the Great War

Gunpowder and the Printing Press: The History and Legacy of the Inventions that Modernized Europe

France in World War II: The History of Nazi Germany’s Conquest of France and Its Liberation By the Allies

NASA’s Space Race Programs: The History and Legacy of NASA Missions in the 1950s and 1960s

Occupation and Liberation of France during World War II, The: The History of the Decisive Campaigns in 1940 and 1944

Servile Wars, The: The History and Legacy of the Slave Uprisings against Rome

Day That Will Live in Infamy, A: The History and Legacy of Japan’s Initial Attacks against the United States at Pearl Harbor, Wake Island, and the Phi

Crusading against Christians: The History and Legacy of the Catholic Church’s Crusades against Other Christians during the Middle Ages

War of the Keys, The: The History and Legacy of the Military Conflict Between the Holy Roman Empire and the Vatican

The History of France Under German Occupation During World War II

Germany Between the World Wars: The History and Legacy of the Weimar Republic and Nazi Germany in the Interwar Period

Medieval Europe’s Mercenaries: The History of Hired Soldiers across Europe and the Byzantine Empire in the Middle Ages

Railroad Robber Barons, The: The Lives of the Magnates Who Dominated America’s Rail Industry in the 19th Century

Battle of Borodino, The: The History and Legacy of Napoleon’s Pyrrhic Victory during the Invasion of Russia

World’s Most Notorious Secret Societies, The: The Histories and Mysteries of the Freemasons, the Illuminati, and the Rosicrucians

Circus Maximus and the Colosseum, The: The History of Ancient Rome’s Most Famous Sports Venues

Albigensian Crusade and Hussite Wars, The: The History of the Catholic Campaigns against Christian Minorities in Europe before the Protestant Reformat

Russo-Turkish Wars, The: The History and Legacy of the Conflicts Between the Russian Empire and Ottoman Empire

Mercury and Gemini: The History and Legacy of NASA’s Groundbreaking Spaceflight Programs

Samurai and Ninja, The: The History of Japan’s Legendary Warriors

Roman Gladiators and the Colosseum, The: The History and Legacy of Ancient Rome’s Most Famous Arena and Fighters

Ancient Libyans and Nubians, The: The History and Legacy of Ancient Egypt’s Most Prominent Neighbors in Africa

Inheriting the Ancient Near East after Alexander the Great: The Rise and Fall of the Seleucid Empire and the Ptolemaic Kingdom