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How did the deadliest war in human history begin?
It started with lies, betrayal, and a brutal invasion.

In this powerful full-length documentary, we dive deep into the events of September 1939, when Nazi Germany invaded Poland, igniting World War II. From the Treaty of Versailles to the Nazi-Soviet Pact, from Blitzkrieg tactics to the Soviet invasion from the east—this is the full story of how the war began.

You’ll learn:
• Why Hitler targeted Poland
• How Britain and France responded
• What happened during the Soviet invasion
• The horrors of occupation—and Poland’s unbreakable spirit

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Transcript
00:00September 1, 1939.
00:03The world wakes to a new kind of war.
00:06Across the Polish border, the rumble of tanks, the screech of dive bombers, and the blast
00:10of artillery signals the dawn of destruction.
00:13Cities burn.
00:15Families flee.
00:16Soldiers fight and fall.
00:19This is not just the invasion of a country.
00:22It is the start of the deadliest conflict in human history.
00:26This is how World War II began.
00:28To understand how the Second World War erupted, we must go back to the end of the first.
00:34World War I had left Europe broken, bloodied, and bitter.
00:38And when the guns finally fell silent in 1918, peace did not follow.
00:43Resentment did.
00:45Germany, the defeated power, bore the full weight of the blame.
00:49The Treaty of Versailles in 1919 imposed brutal terms.
00:54Vast territorial losses, economic reparations, military restrictions, and above all, humiliation.
01:02The treaty was meant to secure peace.
01:05But instead it sowed the seeds of vengeance.
01:08In the streets of a shattered Germany, a wounded veteran named Adolf Hitler absorbed this bitterness.
01:13And in time, he would turn it into a weapon.
01:18Adolf Hitler rose to power by promising to undo Versailles, restore German pride, and build a new empire.
01:25In 1933, he became chancellor.
01:29By 1934, he was Führer, a dictator with unchecked power.
01:33The Nazi regime rebuilt Germany's military, reoccupied Forbidden Lands, and rearmed for war.
01:41One by one, Hitler violated the treaty's restrictions, and the world did nothing.
01:48In 1938, Hitler annexed Austria without firing a shot.
01:53Then came Czechoslovakia, first the Sudetenland, then the rest.
01:57Western leaders clinging to the hope of peace gave in.
02:01They called it appeasement.
02:02Hitler saw it as weakness.
02:04Now he set his sights on Poland.
02:07Poland stood in Hitler's way, for both ideological and strategic reasons.
02:12First, the Nazis believed in Lebensraum, living space.
02:17Hitler dreamed of German expansion eastward into Slavic lands.
02:21Poland was the first domino.
02:23Second, the Treaty of Versailles had taken German lands and given them to Poland,
02:28including the Polish Corridor and the free city of Danzig.
02:32Hitler wanted them back.
02:34Third, he needed a quick, glorious victory.
02:38A war with Poland could rally the German people and prove that the Nazi war machine was unstoppable.
02:43But there was a risk.
02:44Britain and France had pledged to defend Poland.
02:47If Hitler invaded, he could face war on two fronts.
02:50So he made a bold, secretive move.
02:53On August 23, 1939, the world was stunned by news from Moscow.
02:59Germany and the Soviet Union, sworn enemies, had signed a non-aggression pact.
03:03But buried within the fine print was a dark secret.
03:06The two powers had agreed to carve up Eastern Europe.
03:10Poland would be split down the middle, Germany taking the west, the Soviet Union the east.
03:16For Hitler, the pact removed the threat of a two-front war.
03:20For Stalin, it bought time and territory.
03:23Together, the two dictators made a deal that would cost millions of lives.
03:28Now, there was nothing left to stop the invasion.
03:30But Hitler didn't just invade.
03:33He wanted to make it look like Poland started it.
03:36On the night of August 31, 1939,
03:39German SS troops staged a false flag attack on a radio station in Gleivitz near the border.
03:45They dressed concentration camp prisoners in Polish uniforms,
03:49shot them, and left their bodies as evidence.
03:52The next morning, Hitler addressed the Reichstag
03:55and declared that Germany had been attacked and was now returning fire.
04:00It was a lie.
04:02A calculated, deadly lie.
04:04But by then, the tanks were already rolling.
04:08At dawn on September 1, 1939, Germany invaded Poland.
04:13The assault was swift and brutal.
04:15More than 1.5 million German troops surged across the border.
04:20Overhead, the Luftwaffe bombed roads, railways, and cities.
04:24Tanks crushed defenses.
04:26Soldiers advanced with mechanical precision.
04:28It was blitzkrieg, lightning war.
04:31Polish troops fought bravely, but they were outmatched.
04:35Many still rode horses.
04:37They lacked modern tanks, aircraft, and support.
04:40Germany attacked not just the military, but civilians.
04:45Cities like Warsaw were bombed relentlessly.
04:48Villages were burned.
04:49Innocents were killed.
04:50This was not war.
04:53This was annihilation.
04:55In London and Paris, the invasion sent shockwaves.
04:59On September 3, 1939, Britain and France declared war on Germany.
05:04Sirens wailed.
05:06Soldiers were mobilized.
05:07But no troops were sent to Poland.
05:10For months, Western Europe entered a strange silence.
05:14What would be known as the Phony War.
05:16While Poland burned, Britain and France waited behind their defenses.
05:21Poland had been promised protection.
05:23Instead, it was left to face the storm alone.
05:27Then came the second blow.
05:30On September 17, 1939, the Soviet Union invaded Poland from the east.
05:35Using the chaos as cover, Stalin claimed to be protecting minorities.
05:40In truth, it was part of the secret deal with Hitler.
05:43Polish forces, already stretched to the breaking point, now faced a second unstoppable enemy.
05:49They were surrounded.
05:51Within weeks, Polish resistance collapsed.
05:54On October 6, the last pockets of organized defense surrendered.
05:58In just five weeks, Poland had been conquered.
06:01And divided by two of the most brutal regimes in history.
06:05But the worst was yet to come.
06:07In the German-occupied West, Nazi terror began immediately.
06:12The regime launched Operation Tannenberg, targeting Polish elites, intellectuals, priests, and officers.
06:18Thousands were executed.
06:20Jews were forced into ghettos.
06:22Anti-Semitic laws were enforced.
06:25This was the early stage of what would become the Holocaust.
06:28In the Soviet-occupied East, repression was no less brutal.
06:32Hundreds of thousands of Poles were deported to Siberia.
06:35Families were torn apart.
06:37In 1940, over 22,000 Polish officers and professionals were executed in the Katyn Forest,
06:44a massacre the Soviets denied for decades.
06:47For Poland, the invasion was not just military defeat.
06:50It was national trauma.
06:52How did it come to this?
06:53For years, the world had tried to reason with Hitler, to avoid conflict, to preserve peace.
07:00But appeasement did not buy peace.
07:03It bought time.
07:04For Germany to grow stronger.
07:07And its ambitions to grow deadlier.
07:09The invasion of Poland proved that Hitler could not be negotiated with.
07:14His vision demanded conquest.
07:16His ideology demanded blood.
07:18The world had waited too long.
07:21Now, war was inevitable.
07:23Though defeated, Poland did not surrender.
07:26Its government fled to exile.
07:28Polish pilots joined the Royal Air Force and became heroes in the Battle of Britain.
07:33Resistance fighters launched underground movements, sabotaging German forces and aiding Allied spies.
07:39Polish troops fought across North Africa, Italy, and France, never giving up the dream of liberation.
07:49Poland may have fallen on the map, but it never fell in spirit.
07:53The invasion of Poland marked the beginning of World War II.
07:57But it was more than a military campaign.
08:00It was a signal, to the world, that fascism would not stop.
08:05That lies, terror, and violence would become the new normal.
08:08And that the fight against tyranny would not be won in speeches, but in blood.
08:14Over the next six years, nations would burn, empires would fall, and tens of millions would die.
08:20But it began here, with Poland.
08:23The story of the invasion of Poland is not just a chapter in history.
08:27It is a warning.
08:29About the cost of ignoring tyranny.
08:31About the danger of silence.
08:33About the price paid when evil goes unchecked.
08:35Poland stood alone, in 1939.
08:40But it stood, and the world would never be the same.
08:46If this story moved you, remember to like, share, and subscribe.
08:51History must be remembered, because those who forget the past are doomed to repeat it.
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