None of the wars that have broken out in human history have been recorded to be as tragic as the Second World War. In the middle of World War II, the German army began to be a little weak on the battlefield, and after the Battle of Kurs, the Soviet Red Army successfully defeated the German soldiers and completely grasped the initiative in the war. For the peoples of all countries, the Soviet-German war was very special, because the Soviet Union defeated the myth of the undefeated German steel division, and the study of this war by later generations has not stopped. Some experts once proposed that if Germany did not go to the Eastern Front to provoke the Soviet Union, the outcome of World War II might be different, so why did the German army that swept through Europe at that time launch an attack on the militarily powerful Soviet Union?
The head of Germany at that time was the Nazi Party Hitler, and after he came to power, he quickly took a series of measures to make Germany a military power in Europe. Hitler was not satisfied with the current situation, his ambitions quickly expanded, and the lack of domestic resources hindered the development of the German economy, so in order to develop, it was necessary to seize more resources and territory. Hitler threatened to dominate all of Europe, which was rich in resources and fertile soil, but most of Eastern Europe at that time was a British colony. In the face of Britain, which had a strong naval strength, Germany could not defeat it at all, so Germany could only launch an attack on the Soviet Union, and the Soviet Union was very rich in coal resources.
Another most important reason was that the Soviet Union took advantage of the fact that Germany and Britain and France were pinching each other, aggressively invaded and stirred up trouble in the Rear of Germany, and even pushed its sphere of influence into Germany itself. The Soviet Union and Germany signed a Soviet-German non-aggression pact, and after partitioning Poland, the Soviet Union launched a war against Finland. Not only did large tracts of land be seized, but also the "Eastern Front" was established, and even marched to Romania, deploying more than two million Soviet Red Army troops in the country's border areas, while also transporting tanks and warplanes to the Soviet-German border. It can be seen how ambitious the Soviet Union was, Romania was called the "European fuel tank", and most of the oil used by Germany in World War II came from Romania. Therefore, the Soviet Union's attack on Romania is like pulling teeth in the mouth of a tiger, and Germany naturally will not ignore it.
Secondly, before the outbreak of the Soviet-German war, the Soviet Union had been strengthening its military strength. In 1939, Germany passed the Conscription Act, followed by the enlistment of many men, and the upgrading of weapons, germany's military strength has been greatly improved. In two years, the Soviet tanks increased by more than 7,000, artillery to 90,000, fighters to 17,745, and more than 600 ships. Moreover, on the eve of the war, the Soviet Union was still building fortifications, deploying 170 divisions on the Soviet-German border, and secretly mobilizing 5 missile regiments, which made Germany very afraid. As Chancellor of Germany, Hitler naturally understood the principle of attacking first, so Germany decided to preemptively attack the Soviet Union.
In fact, Germany and the Soviet Union have had a grudge since 1933, when Hitler had just become chancellor, and the Nazi Party had 32% of the seats in the Reichstag, while the Communist Party had only 17%. In order to dissolve the parliament, the Nazi Party began to suppress communism in a frenzy, and the Soviet Union was the sponsor of industrialism, so Germany's move caused Stalin's dissatisfaction.