The logic of the whole war was that there was first a gradual retreat, then a tug-of-war and a stalemate, and then a counteroffensive, very similar to the Great Patriotic War:

In 1941, the German army took advantage of the superior armored forces and the opportunity to attack Moscow in October, and the Soviet army launched an active defense, destroying a large number of German forces and winning the defense of Moscow.

On November 19, 1942, the Soviet army launched a confrontation with the German army in Dmiyansk, Kharkov and other places, and finally launched a counteroffensive in Stalingrad, and on February 2, 1943, the encircled Sixth Army was completely annihilated. The Battle of Stalingrad was a fundamental turning point in the Soviet-German battlefield. This led to the confrontation phase

In August 1943, the Soviet army won the Battle of Kursk in the offensive against it, and the German army completely lost its strategic offensive capability and turned to the defensive on all fronts. In 1944, the Soviet army launched a strategic general counteroffensive, recovering all the occupied lands through 10 strikes against the German army, and turning military operations on the territory of Germany and its European allies, forcing Finland, Romania, Bulgaria and Hungary to withdraw from the war and turn against Germany.

In early 1945, the Soviets launched a powerful offensive, invading Poland and Czechoslovakia, and occupying East Prussia and Silesia. On May 2, 1945, Soviet forces captured Berlin and forced Germany to surrender unconditionally on May 8.

In the Void War, the Void took the lead with the advantage of the endless sea of worms and surprise attacks, and was about to rush out of the Acacia Peninsula.

In the second stage, the Void and Shurima launched a confrontation at the defensive line, and Shurima gradually became familiar with the characteristics of the Void, and after transforming the armament, with the assistance of the air fleet, destroyed a large number of living forces in the Void.

In the third stage, Shurima began to push forward, and the Void continued to counterattack, with both sides winning and losing, and in general, Shurima won more and lost less, so Shurima was able to advance to the Void's flashpoint.

In the decisive battle of the fourth stage, Shurima sealed the Great Void Rift after paying a huge price, ending the Void War.

The price paid by Shurima is also staggering, as we can see from a similar history of the Great Patriotic War in the Soviet Union:

From June 22, 1941, when the German "Barbarossa" planned to blitz the Soviet Union, to May 8, 1945, when the Soviet army entered Berlin to accept the German surrender. In less than four years, the Soviet Union lost 27 million deaths, and the total number of direct deaths in World War II was 70 million, and the Soviet Union accounted for 1/3.

If you look at this figure in the Soviet Union, on the eve of World War II, the total population of the Soviet Union was only 180 million, but 27 million people were killed in battle, the total casualties were 59.8 million, and half of the men of military service age (16-40 years old) in the Soviet Union were either dead or disabled.

Moreover, do you think that when the war ends, the casualties stop?

After the end of World War II, the Soviet Union was in ruins, medical and health facilities were severely damaged, the injured were unable to receive timely and effective treatment, and various infectious diseases began to spread. In 1949, 60% of the people in Soviet cities died of tuberculosis, cardiovascular diseases, pneumonia, and gastrointestinal diseases caused by the war, and in the 13 years from 1946 to 1959, an average of 1 million to 1.7 million people died each year in the Soviet Union due to war diseases.

The war has also taken a heavy toll on the health of men and women of childbearing age. Most men have to go to the battlefield, their bodies are often in a state of exhaustion and tension, and many even become disabled, which seriously affects the fertility and quality of men. The combination of the overload of women in factories and rural areas, combined with food scarcity and malnutrition, led to a child-infertility and difficult fertility situation for many women, which combined to lead to a child mortality rate of 19% in the Soviet Union in 1947.

In 1946, the average life expectancy of men in the Soviet Union was only 46.6 years, and in 1947, when there was a famine, the life expectancy of men was directly reduced to 39.9 years, while the average life expectancy in the United States was close to 70 years during the same period.

What is more far-reaching is that the war led to a serious gender imbalance in the Soviet Union, and the most serious loss of men was born in 1920-1924, from 4.66 million in 1939 to 2.7 million in 1949, a loss of more than half, and the ratio of men and women in this age group after the war was 38:62, if you don't have an intuitive feeling, I will cite another data, at the beginning of 2020, our ratio of men to women was only 51:49, which has made countless people wail, which shows the scene of the Soviet Union at the beginning.

Even today, 75 years after the end of the war, the ratio of men to women in Russia is still 46.5 to 53.5, and women still far outnumber men.

Shurima faces an even more brutal Void, where a bullet can be used to heal a wound and can be healed with medicine. There is no cure for the infection caused by being injured by a Void Creature, and unless the arm is cut off, the entire person will become a Void Creature.

The casualties will only get worse! In the era of cold weapons, where all people are soldiers, Shurima is very likely to have lost nearly half of the population after the Void War!

The most difficult problem facing Shurima in the war is infection, the infection of the Void creatures.

Shurima must solve this problem, otherwise facing the Void creatures is like a bare-handed man facing a zombie - it will only make the other party fight more and more.

The answer is the Eternal Flame: an item that Blue Feather obtained in the Void Eruption episode, it is the purest elemental flame of the Runeterras, hating the invaders and possessing the ability to purify matter corrupted by the Void. Blue Feather had tested it before, and the equipment forged with the Eternal Flame had the ability to resist the Void's corrosion to a certain extent, and the enchantment effect of the Eternal Flame was even better.

In the original plot, it must have been Shurima who somehow obtained Acacia's precious magic item, the Eternal Flame. But the Eternal Flame has fallen to Acacia.

It was only Jax, the master of weapons, who offered the Eternal Flame to Shurima, and although he hated Shurima's atrocities in Acacia, he was absolutely unambiguous in the face of right and wrong.

Whether it was to make amends for his mistakes, to take revenge on the Void creatures who had taken over their homeland, or to defend the entire Runeterra, the Master of Weapons provided the Eternal Flame to the Shurima army, blessed them with their armor, and must have been personally involved in the Void War, mixing with Shurima's army to participate in the battle against the Void creatures.

Considering that the Master of Weapons doesn't know much magic, Kieran, the Grand Mage who travels through different timelines, must have been involved.

That's right, Kiran! He's the master of time magic! Ludwig would have loved to meet him.