As Hitler drives for a fast invasion he faces covert and open resistance, even an assassination attempt. In the background British and German agents and double agents play a game of betrayal and counter-betrayal.

Ten weeks into World War Two, and the Allied ground forces are bored in France. In North-Eastern Europe, Poland's suffering has no end and Finland is in the crosshairs of the USSR.

The persecution, incarceration, enslavement and murder of the Polish people in occupied Poland is driven by ideological hatred for both Nazi Germany and Soviet Russia, but it's also a personal matter for Joseph Stalin.

For the men in the navies of the warring nations in Europe, there was nothing phony about WW2 in October 1939 - mortal danger was immediately under the cold surface at the receiving end of a torpedo or a depth charge...

While the Third Reich and USSR consolidate their Polish conquest, their leaders are wary of each other but turn the attention to the next prize. Stalin moves to the North and Hitler pushes for an attack in the West.

In the West, the sun sets on Poland as the last forces surrender, but her defenders are already regrouping abroad. In the East, the sun rises on China as Japan meets yet another defeat.

Facing two enemies at once, Poland finds itself in a crushing vice after less than a month of war and the Polish forces must flee their own country to live to fight another day.

When the USSR crushes the plans of the Allies for Poland and the Japanese plans in China in the same week, it is Germany that benefits.

When the Wehrmacht and the SS continue devastating Poland and her people in the first weeks of September, her last chance is her western allies.

The German-Polish war is the match that ignites the flames that finally burn British Prime Minister Neville Chamberlain's appeasement efforts to the ground.

When Germany invades Poland on September 1, 1939, the world is already at the brink of a new world war…

As the war turns one year old, there seems to be no end in sight. The Luftwaffe starts targeting civilian areas of London, the peoples of Eastern Europe switch country without moving houses, in occupied territory the population continues to be terrorized, and an end to the Chinese war that has been raging on for years now seems ever further away.

This week, the communists attack the Japanese in the Battle of 100 Regiments. Meanwhile in Europe, the Battle of Britain enters phase three with the Luftwaffe actively targeting British airfields.

As the Battle of Britain reaches not seen before levels of intensity, one of the British colonies is lost to the Italians.

This week, the war spreads to Africa, when the Italians invade the British Colony of British Somaliland. While this might seem trivial, it might have tremendous consequences on the remainder of the war.

As the Kanalkampf comes to a close, the Battle of Britain heats up. Hitler wants Britain out of the war. But before the Germans can invade Britain, it will have to deal with the Royal Air Force and the Royal Navy.

Hitler searches for ways to force Britain out of the war, but the British sit safely behind their cliffs, their channel and their Royal Navy. Engaging the navy and invading Britain would require a major air-superiority. As a result, the Germans plan to knock the British out of the skies. This is the Battle of Britain.

Peace seems to slowly return to the European mainland, but not for long, as the Germans move their airplanes to the French coast to Battle Britain in the skies while they make invasion plans, and the Soviets are entering the Baltics after 'elections' invited them to.

The Germans and the French in Vichy consolidate their newly acquired power as the British deal with the remnants of the French navy. The Battle of Britain begins with fighting above the English Channel, a battle with great consequences for the future of Europe.

The repercussions of the fall of France are not yet seen in full. But this week Britain makes it clear it isn't about to give up, even if it will mean some really hard decisions.

Hitler goes to Paris, while Stalin occupies more territory... but something is on Stalin's mind. News of the sudden success of the Wehrmacht in the West is not what he had hoped for. Churchill also looks to the West for help while a German invasion of the British Isles seems imminent. Far East the Japanese are on the advance.

While the fighting subsides in much of France, the Italians invade in the south, while tension continues to grow in the Baltic states as the Red Army increases its presence and the USSR makes plans for coups.

While many armies use performance enhancing drugs during WW2, the Wehrmacht takes it to extremes in 1940, with more than debatable consequences.

The fighting in France isn't over, not even when Paris falls, as the Germans advance and Italy joins the fight. But the Brits now have their back to yet another ocean and see no option but out. Further east Stalin uses the chaos in the West as cover to start moving in on his neighbours.

You might have heard he a was vegetarian. You might have heard that he shunned alcohol. You might have heard he was anti-tobacco. Then you might think he was against hard drugs as well, but you'd be wrong…

As the battle for France is still raging but looks like a ringing victory for Nazi Germany, and the encircled troops in Dunkirk have been evacuated, will Great Britain remain in the war? If so will British forces remain in continental Europe? In fact will Great Britain even be able to remain an independent nation, or also fall to the Nazis?

When the Germans Panzers move north from Calais, the British Expeditionary Force and France's soldiers still fighting in Belgium and Northern France are trapped between a numerically superior German army. A big operation codenamed 'Dynamo' is set up to evacuate as many as possible from Dunkirk.

Marc Halter takes Indy and all of us on a tour through the fort at Schoenenbourg on the Maginot Line.

While the massive invasion of the Benelux countries and France was going down last week, things were also developing on the fronts in Norway and China. But this week, the German beast is let loose. After breaking through its cage at Sedan last week, nothing seems strong enough to block its way to the English Channel. And if one thing becomes clear, it is that the Allied command structure and the way they communicate is one big smoking mess...

After the German army breaks through the French lines at Sedan, the left flank of the moving army has to be secured. The French Ouvrage la Ferté, part of the Maginot Line Defense works, is subject to this consolidation. But the Germans move with ulterior motives, as to them capturing a Maginot Line fort in the first week of the offensive has a huge propaganda value. Tour guide Richard Tucker shows Indy the grounds of a modern tragedy, where 107 French soldiers gave their lives.

The Chieftain takes you on an extensive walkthrough of the armoured vehicles used by both sides during the German invasion of France in 1940.

The German invasion of Western Europe has been going for over a week now, and the Neutral and Allied countries are in disarray. The Netherlands, despite putting up fierce resistance on some occasions, faces overwhelming powers while Belgium, France and the British feel the pressure from an organised and armoured assault from the Ardennes. And still, the German tanks, soldiers and aircraft are not all the Allies have to fear, as many of their losses are caused by their own command.

The Maginot Line was not the failure many think - in fact it was quite a remarkable feat - find out more in this video.

As the Allied troops in Central Norway are evacuated and the Norwegian troops there surrender to the Germans, the Allied position around Narvik is still quite strong. With the addition of roughly 5000 Polish soldiers, the French, British and Norwegian force will prove to be a formidable foe for the Germans up North. This week however, the war drastically changes as not three but four Neutral countries are invaded. The Phoney War is ultimately over.

Allied plans to take Trondheim in Norway to allow for larger reinforcements and even bigger aerial support to come in are disbanded as the troops approaching Trondheim are pulled back from Norway. While the Allied efforts in Norway lose force there, the Allied forces in Western Europe are prepared for a German invasion through the Benelux countries. The Japanese too are determined to continue their campaign in China, and send thousands more young men into the battlefields.

After the Great War was over, the French reconsidered their armies function and the role that tanks would play in future warfare. At the brink of World War Two, the Char B tank is deeply embedded in the structure of the French armoured defences. David Willey from the Tank Museum in Bovington (UK) tells how French politics influenced how the Char B will be used if the Germans attack.

The Invasion and subsequent Battle of Norway has only just begun when the British decide to pull back. Poor planning and misfortune after misfortune harms the British campaign, which becomes very apparent this week while the fighting continues. Almost everywhere, except for in the far north, the Allied troops pull back under heavy German pressure.

The German Invasion of Norway is still very much in full swing. The German Wehrmacht is moving north from Oslo, where a Norwegian force is trying to halt them in anticipation of Allied reinforcements. The British do land in Norway, but don't necessarily rush to relief the Norwegian army. Meanwhile, Norwegian 'traitor' and 'failure' Vidkun Quisling rises to be the new leader of Norway – only to get rejected by Hitler again. Numerous powers are now trying to grab, restore or consolidate military or political power in Norway. It's a mess.

This week, the Phoney War seems to come to an end when Germany invades Denmark and Norway. The Allies seek confrontation with the Germany in the hope to at least deny them full access to the Swedish Iron mines. Nevertheless, the Germans are prepared and have been planning this for weeks. It looks like it will cost a lot to put a stop to this.

While China gets a new government, or at least in the eyes of Japan, the British are trying to cope with the rationing of meat and dairy products by trying out some new recipes. More importantly, Germany seems to be very serious about invading Norway. However, the British also plan to move closer to Norway.

Newly appointed French Prime Minister Paul Reynaud and his British counterpart Neville Chamberlain spend the week looking for ways to harm the Germans. Not just by targeting their direct opponent directly, but also by exploring the idea of expanding the war into much bigger territory. In the meantime, the French prepare for the expected invasion and the Allies are laying the foundations of what might one time become a weapon of mass destruction.

Rationing of goods in Europe started immediately when the war broke out. Lord Woolton, British Minister of Food came up with one of the first substitute dishes... a vegetable pie that was promptly named after him. Our team chef Joram shows you how to do it.

French Prime Minister Daladier overplays his hand and is replaced after his vision regarding Scandinavia wasn't widely shared in the French parliament. Meanwhile, the French and British in France are preparing for a German attack. If Hitler gets it his way, they will also have to prepare for an attack in the south as Hitler tries to persuade Mussolini to join his invasion.

The Winter War is over. The Allies tried to stall the Finns for as long as possible to justify their invasion of Norway, but the Finns have had it and don't trust the British and French to come to their aid. This week, the Finns sign a peace agreement with the Soviet in Moscow.

The French promise to send troops to aid Finland, though the majority is planned to go to Norway or Sweden. In return, the Finns postpone their peace talks with the Soviets. It is at that moment that the Finns realise that the French are playing tricks and the Soviets are not to be messed with. It's deal or no deal, and they need to decide quick.

The German plans for the invasion of Western Europe start taking shape. Mansteins plan is innovative, bold and controversial, but Hitler likes it. If everything goes according to his plan, the Germans will be celebrating their victory in Paris come spring.

German Genral Erich von Manstein has a cunning plan. And as it happens, it's just how Hitler likes it. This week, the German war plans change quite drastically. In the meantime, the Soviet Red Army continues it push through the Finnish Mannerheim line, except for a stubborn Finnish pocket of resistance at Taipale.

After more than a week of preliminary bombardmends and attacks, the Red Army finally attacks the Finnish defensive positions on the Karelian Isthmus en masse. They throw thousands of troops at the Finns at the entire width of their lines, even exceeding them. The Finns defend the best as they can, but their winning streak seems to come to an end.

While the Winter War rages on in Finland, Japan is confronted with a dilemma. Keep fighting the Chinese and face huge problems feeding the populace in Japan and their newly conquered territories or withdraw and face your own populace to whom you've promised a glorious victory.

The Soviet forces revive their winter offensive this week. More men, more tanks and more artillery are brought in to try to force a breakthrough in the Finnish lines. Meanwhile, Churchill encounters resistance to his plan to cut of the German iron trade with Sweden.

The T-26 tank was one of the most frequently used tanks during the first battles of World War Two. It saw action in the Soviet Union, Finland and China. In our first collaborative video with the Tank Museum in Bovington, UK, David Willey and David Fletcher talk about the development, production and action of the this tank.

This week shows the Allies first attempts to break the German Enigma code. Meanwhile, the German war economy shows some flaws and the Soviets are massing artillery in an effort to break the Finnish defences.

As the Winter War rolls on the only help the Finns are getting are from volunteers. The Western Allies still have their thoughts on Norway, little do they know that the Phoney War almost ends this week...

As the Winter War rolls on the only help the Finns are getting are from volunteers. The Western Allies still have their thoughts on Norway, little do they know that the Phoney War almost ends this week...

After the chaotic invasion and catastrophic losses of the first weeks of the Winter War, the Soviet Army has learnt their lesson. Further west the Wehrmacht is ready to move, as long as the skies stay clear.

In Finland the invading Red Army suffers catastrophic casualties, while in China the Nationalists are divided as Japan uses diplomacy to strike back.

The Chinese Nationalists under command of Chiang Kai Shek is desperately looking to make new or restore old, allies to aid them in their fight against the Japanese. Meanwhile, the Soviets are still struggling to turn the Winter War against the Finnish in their favor.

While the Winter War continues with a Soviet armoured attack at Summa and the Lähde Road and the British attack the Germans from the skies in the first official aerial battle of World War Two, there's trouble in China. Chiang Kai Shek is looking for ways to gain a new advantage on the Japanese.

In the second week of the Winter War, during multiple counteroffensives, including the famous Sausage War, the Finnish Defence Forces dash any hopes of a quick victory that the Red Army and Stalin might have had.

When the Red Army invades Finland they get a cold reception and a pretty nasty surprise. It looks like team Stalin might just be skating on some very thin ice.

On the final day of November 1939 the Red Army of the USSR invades Finland and the Winter War begins.

The European Allies seek a countermeasure to the mysterious German mines, in China the Japanese advance, and in Poland it is the beginning of the Warsaw Ghetto.

While the Finnish and the Soviets seem to be moving ever closer to war, the Royal Navy is losing ships at a frightening rate to an explosive threat not yet understood.

As Hitler drives for a fast invasion he faces covert and open resistance, even an assassination attempt. In the background British and German agents and double agents play a game of betrayal and counter-betrayal.

Ten weeks into World War Two, and the Allied ground forces are bored in France. In North-Eastern Europe, Poland's suffering has no end and Finland is in the crosshairs of the USSR.

The persecution, incarceration, enslavement and murder of the Polish people in occupied Poland is driven by ideological hatred for both Nazi Germany and Soviet Russia, but it's also a personal matter for Joseph Stalin.

For the men in the navies of the warring nations in Europe, there was nothing phony about WW2 in October 1939 - mortal danger was immediately under the cold surface at the receiving end of a torpedo or a depth charge...

While the Third Reich and USSR consolidate their Polish conquest, their leaders are wary of each other but turn the attention to the next prize. Stalin moves to the North and Hitler pushes for an attack in the West.

In the West, the sun sets on Poland as the last forces surrender, but her defenders are already regrouping abroad. In the East, the sun rises on China as Japan meets yet another defeat.

Facing two enemies at once, Poland finds itself in a crushing vice after less than a month of war and the Polish forces must flee their own country to live to fight another day.

When the USSR crushes the plans of the Allies for Poland and the Japanese plans in China in the same week, it is Germany that benefits.

When the Wehrmacht and the SS continue devastating Poland and her people in the first weeks of September, her last chance is her western allies.

The German-Polish war is the match that ignites the flames that finally burn British Prime Minister Neville Chamberlain's appeasement efforts to the ground.

When Germany invades Poland on September 1, 1939, the world is already at the brink of a new world war…