The demarcation of the borders of the Soviet Union and Germany in the European part was very clear, and there were no territorial disputes between the two countries.

Quite simply, much of this border crosses Polish territory, and spoil-sharing agreements usually leave few holes for the parties.

Many people don't know that this dividing line, which cut Poland in half, was actually first proposed by an Englishman.

After the end of World War I, Poland regained its status as an independent state with the support of the Entente.

Don't think that the Entente is presiding over some kind of "justice", that dirty war has nothing to do with this word from beginning to end.

The independence of Polish territory would only deal a blow to the three old empires, namely Prussia, Austria-Hungary, and Tsarist Russia. Originally, Tsarist Russia belonged to the side of the Entente, so as long as Nicholas II remained in power, the so-called Polish question should not be put on the agenda of the Paris Peace Conference. The problem was that the Romanov dynasty had been overthrown, the entire family of the Russian tsar had been killed, and the country was controlled by the Soviet power with the red flag.

As a result, Poland became a bridgehead for the West to resist the expansion of the Red Soviets into Europe, and the Second Polish Republic, which thought it was supported by the Entente, rapidly expanded its nationalist power, and the Polish elite was no longer satisfied with the status of an independent state, but also wanted to regain the glory that their ancestors had lost.

I really have to admire the ambition of the Poles, who not only wanted to restore the territory that Poland had ruled in history, but even tried to establish a Polonized federation across the Baltic and Black Seas.

Taking advantage of the weakness and confusion of the Red Soviets, Poland challenged the nascent Soviet Union, and the Polish army crossed the border of western Russia, which had been blurred by World War I.

The Polish army, which initially received a large amount of military foreign aid, made rapid progress, and some of the Great Polish troops were invincible, and they soon occupied large swathes of Lithuania, Ukraine, and Belarus, and even captured the Ukrainian capital of Kyiv for a time.

Because the main force of the Soviet Red Army at that time was pinned down by the White Russian resistance movement at home, the Red Army was always in a disadvantaged position in the balance of forces on the Western Front. But when the White Russian armed forces were completely wiped out, the Red Army immediately shifted its strategic focus to the Western Front, and the proud Poles began to suffer.

In the magnificent Battle of Kiev, Semyon. The 1st Cavalry Army commanded by Budyonny shined, and the corpses of the Polish-Ukrainian army were all over the field, and the fierce Cossack cavalry swept the entire territory of Ukraine, thus establishing the high position of the 1st Cavalry Army in the Red Army sequence.

At the same time, the Soviet government launched a propaganda offensive in the country, taking advantage of the enmity of the Russian ethnic groups against the Poles, calling on all strata of the country to abandon the contradictions of political ideas, and all Russians should stand together to defend their sacred homeland.

Not to mention the crimes committed by the Polish army against the Slavic civilians during the war, the reputation of the Poles was already infamous in the days of Tsarist Russia, and if it is said that the Russian people may hesitate to fight the Germans, the fight against the Poles does not require the government to mobilize at all.

Even a large number of White Russian troops scattered in the country after the defeat of the civil war resolutely joined the Red Army after hearing the government's appeal, begging their superiors to give them a chance to fight to the death against the despicable and shameless Polish bastards.

Once the fighting nation has fallen into a state of bloodthirsty fanaticism, how can it be carried by the Polish body.

The Soviet Red Army launched a full-scale counteroffensive on a front of hundreds of kilometers, although the Polish side had a slight advantage in strength, but neither morale nor combat effectiveness could be compared with these veterans of the Red Army, as a result, the Polish coalition army was defeated and retreated, and finally not only lost all the land occupied before, but also was counterattacked into its hinterland by the Red Army, and the front even pointed directly at the capital Warsaw.

Seeing that Poland, which had been born for a few years, was about to come to an end, the League of Nations, which seemed to have disappeared for a long time, finally stood up and called for "peace" in the world.

The British Prime Minister at that time was the famous David Brown. Lloyd. George, who was disgusted by the previous actions of the Poles, and who refused to provide any form of support to the Polish government in view of the rising public opinion of the left-wing movement in Britain.

And Curzon, then British Foreign Minister, was a well-known right-wing politician. Churchill's ally, the standard colonialist, advocated that Britain should provide limited support to Poland as a way to stem the spread of the Red Movement in Europe.

But, as mentioned earlier, the left-wing movement in Europe was at its most active, and the German and Czech dockers refused to even load and unload military supplies destined for Poland, and the whole of Europe seemed to have abandoned Poland.

It was in this context that Curzon proposed a military ceasefire line, suggesting that the Soviet-Polish side should use it as a temporary border for the time being, and that the two sides should sit down and negotiate well to finally determine a mutually acceptable mediation plan. At the same time, Curzon threatened that if the Soviets ignored British mediation, continued their offensive and crossed the ceasefire line, Britain would cut off all trade with the Soviet Union.

The Soviet government, which was in the upper hand of the war, rejected the proposal of the League of Nations and continued to mobilize troops to march to Warsaw, preparing to liberate the "Polish proletariat oppressed by the capitalists".

However, due to various strategic and tactical reasons, such as the misjudgment of the current situation by the senior leaders, the military and strategic underestimation of the enemy, the signing of a military alliance between Poland and France and the receipt of a large amount of material support, the confusion of the communication system between the various units of the Red Army, the contradictions between commanders at all levels, and so on, in the end, the Red Army suffered a crushing defeat under the city of Warsaw, not only with heavy losses in personnel and equipment, but also with a serious impact on the morale of the troops.

The Polish army, which had been given a respite and mobilized throughout the country, had not lost its combat effectiveness after acquiring a large number of French weapons, but had become even stronger than it had been before the war.

In the end, the Soviet Red Army was defeated on the battlefield, and soon the front was pushed back to Russia, Poland reoccupied the territory they had previously seized, and in the war almost exhausted the Soviet power that Tsarist Russia had accumulated and finally had to propose an armistice to Poland.

At this time, Poland was also at the end of its power, both financially and in terms of military resources, it had reached the limit that the country could bear, and it became an acceptable choice to retain part of the gains in exchange for the end of the war.

Poland seized large swaths of territory that belonged to Belarus, Lithuania, and Ukraine, and the Soviet Union conceded defeat and established a new border with Poland.

Some scholars say that the war determined the direction of European history for the next twenty years, and that the leaders of the Soviets gave up their attempts to set off a revolutionary wave in Europe and shifted their focus from external expansion to internal affairs, while Poland's ambitions became even more inflated, and began to constantly provoke the two extremely powerful enemies around them, laying the foundation for their demise twenty years later.

Soviet officers and soldiers captured during the war were deliberately tortured by the Polish army, and because of the lack of accurate records of the time, the number of deaths in the research data ranged from 40,000 to 80,000, and although there were disagreements among later researchers, no one could deny the existence of such war crimes.

Moreover, in the occupied territory of the Soviet Union, the Poles and the puppet armies everywhere inflicted chilling atrocities on the soviet-biased civilians, and the cruelty was even greater than that of the Japanese army twenty years later.

Eventually, after the partition of Poland between the Soviet Union and Germany, a bloody massacre was secretly staged in the Katyn Forest, and the victims became surrendered Polish officers. Stalin's revenge was fierce and thorough, cutting directly off the foundations of the Polish elite. If we count in terms of age, it is very likely that those high-ranking officers who are over forty years old were directly involved in the atrocities of that year, and it seems that there is a hand in the dark that draws a circle in the course of history.

Although the Soviet-Polish War ended in a Polish victory, the Curzon Line did not disappear from the world, and when Germany and the Soviet Union plotted to partition Poland, the Curzon Line became an acceptable border for both sides.

The Soviets not only recaptured the territories occupied by Poland, but also returned to the ceasefire line they had reached twenty years earlier, and Nazi Germany, which was the main force in the destruction of Poland, naturally annexed the remaining half, leaving aside the Polish ideas, which was indeed a fairly fair partition plan.

Of course, it is impossible for this border division to copy the Curzon Line of the year, because of the difference in the composition of the inhabitants of the territory, some slight changes have been made in the middle, but the general direction is almost a copy of this demarcation line.

At this moment, both the Soviet Union and Germany, which are close to this border, are stepping up the construction of various permanent or semi-permanent fortress positions, and at the same time, a secret war based on infiltration and counter-infiltration is also in full swing on this border line.

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