In the Treaty of Versailles signed by Paris and the club, the paragraph about the Rhine is the one that hurts the feelings of the Germans the most. The rhineland, 9450 square miles west of the Rhine River, and the three-mile wide area east of the Rhine River are permanent demilitarized zones, forming a buffer zone between Germany and France. When the allied forces retreated in the mid-1930s, the Germans voluntarily promised to abide by the provisions of the 1925 Locarno Convention and maintain the demilitarization of the Rhine. In fact, as late as May 1935, Hitler publicly clamored that an armed Rhine was Germany's contribution to European peace.

1935 on may 2 1 day, Hitler delivered a "peace" speech in parliament. In his speech, he mentioned that there were "legal insecurity factors" in the Locarno Convention, because the former Soviet Union signed a mutual assistance agreement with France. Obviously, this is Hitler's intention to occupy the demilitarized zone of the Rhine River under the pretext of the Soviet-French agreement. This is because on May 2, 9 days before/kloc-0, von Bloomberg issued the first instruction to the three armed forces, asking them to prepare plans to reoccupy the demilitarized zone of the Rhine River. The code name of this operation is "training". 16 In June, at the 10 meeting of the Working Committee of the German National Defense Conference, the plan to enter the Rhine was further discussed. At the meeting, Jodl reported the details of the plan.

1 On February 27th, 936, the French Parliament ratified the Franco-Soviet Agreement.1On March 27th, Hitler carried out the "training" decision. On March 2, Bloomberg issued a formal order to occupy the demilitarized zone of the Rhine. In the early morning of March 7, 30,000 Dodd troops crossed the Rhine and occupied the demilitarized zone, pushing the Germans to the gate of France, the enemy of the past and the future.

According to the provisions of the Locarno Convention, France has the right to take military action against German troops entering this demilitarized zone, and Britain is also obliged to support France by force. France protested to the League of Nations, which condemned Germany for violating the Locarno Convention. Since March 7th, the French Parliament has been meeting for three consecutive days, and finally decided that France will not take any action before the League of Nations makes a decision. However, the League of Nations has always existed in name only, and the British government believes that this step taken by Germany is not a military action in essence, nor can it be a reason for armed conflict. Later, when the French government asked the British government to support France's military action in the Rhine, the British said, "After all, the Germans just entered his own backyard."

Hitler's sending troops into the demilitarized zone of the Rhine was a risky action, because although Germany's strength was enhanced at this time, Hitler's feathers were not dry enough to fight against Britain and France. As Hitler later said, 48 hours after entering the Rhine was the most tense moment in my life. If the French had entered the Rhine by then, we would have to retreat with our tails between our legs, because the little military force we could use, even a little resistance, was totally insufficient. John wheeler Bennett, a British historian, wrote, "Adolf Hitler won the first battle of the Second World War without firing a shot."

In this way, Hitler proved the truth of Britain and France with only four brigades and touched on the details. When the Germans occupied the demilitarized zone of the Rhine, the restrictions and constraints imposed on Germany by the Treaty of Versailles disappeared. In July of the same year, German and Italian troops intervened in the Spanish Civil War. At this point, fascist Germany, located in the heart of Europe, became the most dangerous war instigator and source of war in Europe.