During World War II, the United States' Lend-Lease Act was undoubtedly an important measure.

In 1941, President Roosevelt introduced the Lend-Lease Act. This bill fully demonstrates the core position of the United States in global affairs.

The United States provided large amounts of war materials to support Britain, and later the Soviet Union also became a target of aid.

This shows the United States' assistance to the anti-fascist alliance, and this behavior reflects the United States' careful consideration of the war situation.

At the time, Britain was under threat from German U-boats, and even the waters off the east coast of the United States were not immune, causing frequent attacks on U.S. ships.

This undoubtedly heightened tensions in the Battle of the Atlantic.

The United States initially acted as a tentative observer on the brink of war.

With the help of the Lend-Lease Act, the United States gradually increased its investment in the war and gradually grew into a key supporting force for the anti-fascist camp.

He fought simultaneously in the Atlantic and Pacific, fending off German submarine attacks in the North Atlantic and Japanese attacks in the Pacific.

U.S. Navy ships set sail from domestic ports and sailed to Europe to perform missions to support Britain. Their routes were gradually established in confrontations with German submarines. The opening of these new routes has caused continuous adjustments to the strategic defense and offensive deployment of the US Navy.

Significant changes have taken place in the industrial field in the United States. Industries that originally served civilian use have shifted on a large scale and invested in the production of military products.

Cities such as Detroit were strong in automobile manufacturing, and they in turn became key areas for military production. War necessities such as military vehicles and aircraft are manufactured in large quantities here, providing strong backing for the Allies in terms of materials and equipment.

In February 1941, Hitler sent the "Afrika Korps" led by General Rommel to Libya. This move is a clear signal of Germany's expansion of power in Africa.

At that time, Italy was in a worrying situation in Africa and faced threats from the British army. Germany intervened with the intention of maintaining Italian colonies in the region.

In Europe, the persecution by the German Nazis reached an outrageous level.

In January 1942, at the Wannsee Conference, Nazi officials formulated a "final plan" to target tens of millions of Jews in Europe. This act exposed the genocidal nature of the Nazis.

Germany was conducting military operations on multiple fronts simultaneously.

In 1942, Hitler launched a large-scale attack on Stalingrad in the Soviet Union, using 2.5 million troops. But after nearly eight months of fierce fighting, the German army ultimately failed to win.

In July 1943, the battle of Kursk became their last attempt. However, when fighting the Soviet army with high morale and abundant resources, the German army suffered a defeat.

The Soviet Union faced an extremely difficult situation.

The Germans were launching a massive offensive, as large as the Battle of Stalingrad when two and a half million troops approached.

In the Soviet Union, Stalin implemented extreme measures out of concern that ethnic minorities might collude with Germany. As a result, more than half a million Russians and other ethnic minorities were killed or deported to labor camps in Siberia. Although this move had a specific purpose, it undoubtedly brought huge losses to the Soviet Union itself.

The Soviet Union exerted tremendous resistance during the war.

In May 1943, Germany ended its African operations, but the Soviet Union continued to fight.

In the summer of 1943, the Soviet Union gradually gained the upper hand. Germany went on the defensive. In the Battle of Kursk, the Soviet Union defeated the German army with 2.5 million troops and 5,000 tanks. This victory finally completely changed the situation of the Eastern European armies.

Britain's performance in World War II cannot be underestimated.

The British Royal Navy made every effort to resist the attack of German U-boats in the Atlantic Ocean, aiming to maintain the security of the Atlantic shipping lanes and ensure the smooth transportation of war supplies.

By virtue of its geographical location, Britain built a key line of defense on the sea to defend against German invasion.

The Royal Air Force's air raids were an important part of its military operations against Germany.

Germany had bombed Britain. However, Britain continued to bomb German cities at night after Germany stopped bombing. This caused a large amount of human and material losses to Germany. This behavior also reflects the tenacity shown by Britain in the war.

In January 1942, twenty-six countries signed the Atlantic Charter. This move symbolized the Allies' determination to unite and fight Hitler together.

However, this does not mean that there are no conflicts between countries.

When General Eisenhower was commanding the northern offensive against France, he encountered three-way conflicts and conflicts with Churchill and de Gaulle.

Solving these problems requires communication and coordination among all parties. Through events such as the liberation of Paris, everyone finally reached a consensus and ensured the coordinated actions of the Allied forces.

At that time, although the governments-in-exile in Europe were on the same front, they pursued different interests. However, they still struggled to remain united in the face of their common enemy, Germany.

In 1944, the Allies successfully recaptured Paris, an exciting feat. At that time, the German commanders in Paris ignored Hitler's orders and resolutely did not destroy the historic center of the city. They have completely preserved the historical appearance of Paris.

Although Germany did not stop resisting, in December 1944, in the Arden region of Belgium, the German army once blocked the Allied advance. However, these were only brief moments of light before the demise of Nazi Germany.

The Soviet Union advanced strongly on the Eastern Front, and the Allies gradually launched an offensive on the Western Front. Nazi Germany's defeat was difficult to reverse in terms of both strategic materials and strategic position.

These battles laid a solid foundation for the final victory and played a positive role in ridding the world of fascist terror.

Do you think that if there is another global war, will there be a situation like World War II, with extremely complex and changeable strategies and actions in many aspects?