In the summer of 1940, Great Britain is under attack in the air and at sea. German U-Boat wolf packs prowl the Atlantic and sink over a million tons of shipping. German skippers call this the “happy time” — but was the German Navy actually that successful early in the Battle of the Atlantic?

The Russian Federation is at war with Ukraine, and some of its supporters insist it will win because Russia doesn’t lose wars. They point to its vast territory, its cold climate, its manpower reserves, or its people’s ability to endure hardship and accept death – and they point to great Russian victories of the past. So let’s put this claim to the test and see what history has to say about Russia’s record on the battlefield.

With the Japanese surrender in September 1945, the Second World War comes to an end. But for China there won't be peace right away because the nationalists under Chiang Kai-Shek and the communists under Mao Zedong still haven't resolved their struggle and so the Chinese Civil War will flare up once again.

The Battle of Norway in Spring 1940 cemented the reputation of the daring and invincible German war machine under Adolf Hitler. But while Denmark and Norway were successfully occupied by Germany, the campaign came at a heavy cost. This was especially true for the German Kriegsmarine which lost a significant amount of warships including the Blücher - losses that essentially crippled them for the remainder of the war.

In September 1980, Iraq invades Iran. Iraqi leader Saddam Hussein is convinced that now is the time to strike, since Iran is still shaken by its Islamic Revolution, and he expects victory within weeks. Instead, the conflict will last 8 years, cost hundreds of thousands of lives , threaten world oil markets, and draw the US into the Persian Gulf for good. It’s the last total war of the 20th century.

Hitler's victories in 1940 present a historic opportunity to Italian Dictator Benito Mussolini to expand the Italian Empire. Instead, Italy suffers a series of humiliating disasters in Greece and North Africa. So why did Mussolini declare war on the Allies at this moment, and could Germany be ultimately responsible for the Italian fiasco?

In 1894, tensions are rising in East Asia. There’s trouble in the small but strategically-located Kingdom of Korea, as rival factions in the royal family fight for power and against popular uprisings. Shaken by a major revolt, Korea’s King Kojong calls on China for help – but Japan intervenes, setting off a war that will devastate Korea and upend the old order in Asia.