While the European side is still peacefully changing, the Asian side has already begun to fire in the sky.

After Lyon's hard work, Japan's self-confidence in this life is even more sufficient than in the previous life, or even more blind than in the previous life. They think that their strength is extremely strong, and they dare not say that they are stronger than France, which is known as the "world's largest army", and Germany, which has just beaten France, and how can it be better than the Soviet Union, which was already a defeated general? (Russo-Japanese War 1904-1905)

As a result, the Japanese base camp adopted the "northward advance plan" advocated by the navy, and ordered the Kwantung Army to be ready for battle and ready to fight the Soviet Union at any time.

At the beginning of July, the Japanese Kwantung Army decided to first attack the Mongolian People's Republic in the vicinity of Nomenkhan and occupy its eastern territory, the Haraha region, as a springboard for the next step to invade the Soviet Far East, and then realize the "northward expansion plan."

On July 11, the 24th National Border Garrison of the Mongolian Army waded from the west bank of the Haraha River to the east bank to graze, and a group of soldiers of the 3rd Company of the Xing'an Garrison Cavalry of the puppet Manchukuo State stationed at the Xilin Taolagai post immediately opened fire to intercept them, and mounted their horses to chase after them, driving the Mongolian herdsmen and horses back to the west bank, which marked the official first shot of the Battle of Nomenhan.

At 21 o'clock on the evening of 13 July, the head of the search team of the 23rd Division of the Japanese Kwantung Army, Higashi-800 Zang Nakasa, was ordered to lead 104 cavalry and 90 armored troops to the Kangyur Temple, which was more than 80 kilometers away from Nomenhan, and sent reconnaissance troops to prepare for battle.

On July 14~15, with the cooperation of 5 Japanese planes, the East 800 Tibetan troops attacked the 742 heights of the Mongolian army east of the Haraha River. The Mongolian army was at a disadvantage (more than 30 casualties) and took the initiative to withdraw to Hexi.

After the Japanese army started, the Soviet government intervened in the conflict in accordance with the "Soviet-Mongolian Mutual Assistance Agreement", immediately drove the 11th Tank Brigade to the Haraha River area, and at the same time ordered the 36th Motorized Rifle Division stationed in Ulan-Ude to assemble on the Haraha River, and moved the headquarters of the 57th Special Army from Ulaanbaatar to Tamchag Prague, 125 kilometers from the Harakha River.

At dawn on July 28, about 1,058 people of the 64th Wing under the command of Wuguang Dazuo of Shanxian County, about 200 people of the search team of the East 800 Tibetan Zhongzuo and the 1st, 2nd, and 8th regiments of the puppet Manchurian Guoxingan Cavalry besieged the Mongolian army in three directions, but were defeated by the Soviet and Mongolian troops, and the Japanese search team killed 115 people and lost 81 people, almost all the troops were wiped out, and the East 800 Zang himself was also killed, while the Japanese army troops in Shanxian County were killed 151 people, 92 people were unknown in their fate and death, and the casualty rate was 20%.

On June 18, Sukov became the commander of the 57th Soviet-Mongolian Special Army, and immediately after taking up the post of commander, Sukov began to gather troops, store and transport military supplies, and opened field airfields in Tamchag Prague, Sambes (now Choibalshan) and other places, and Soviet fighters began to maneuver with Japanese planes in the air.

The Japanese army was in a hurry, and immediately ordered more than 20,000 people of the 23rd Division of the Kwantung Army to attack on all fronts, and dispatched the 1st Tank Regiment and the 2nd Flying Group with a total of more than 70 tanks and more than 180 aircraft to reinforce the 23rd Division.

On 21 August, Lieutenant General Toru Saga, commander of the 2nd Flying Group of the Japanese Army, moved his headquarters from Xinjing to Hailar, transferred four flight regiments, and concentrated 17 squadrons of fighter-bombing and reconnaissance planes. On 22 August, the Soviet army dispatched 150 planes to attack the Japanese assembly areas and field airfields in the vicinity of the Kangyur Temple and the Temple of General Amgulang. From the 22nd ~ 24th, the two sides fought for 3 days in the sky over the Normenhan area, and nearly 60 planes were shot down on the grassland. Since then, the number of Soviet planes has continued to increase, and new fighters have appeared, while the Japanese army has gradually lost the initiative and is in a position of being passively beaten.

At 3 a.m. on August 27, 137 Japanese planes took off from Hailar Airport, and the formation filled the sky over Hailar. At 8:20 a.m., a group of Japanese planes arrived over the Prague Airport in Tamchag and carried out indiscriminate bombardment, covering the Soviet airfield with black smoke. After the operation, the Japanese combat units reported to the Kwantung Army command that 99 Soviet planes had been shot down and 25 ground planes had been destroyed.

In late August, the commander of the Kwantung Army ordered the 23rd Division to launch a ground offensive as soon as possible, and the commander of the 23rd Division, Komatsubara, immediately ordered more than 6,000 troops under the command of Major General Kobayashi of the Japanese army to launch an attack on Haraha and the west bank

On 1 September, a force of more than 6,000 men, under the command of Major General Kobayashi, launched an attack on the west bank of the Haraha River and captured the Sertaulagai Heights at noon.

How could the Soviet-Mongolian army be willing to have its position taken? Zhukov immediately organized 150 tanks, 154 armored vehicles, 90 artillery pieces, all aircraft and other troops to prepare for a three-way counterattack against the advancing Japanese troops near the Bayinchagang Heights. And because the heights were surrounded by open land, the Japanese army was almost completely exposed in front of Soviet tanks, artillery and armored vehicles, which doomed the Japanese army to tragedy.

At 7 a.m. on September 3, the first group of Soviet bombers and fighters bombed and strafed the Japanese troops, and at the same time, the artillery of the Soviet and Mongolian troops also fiercely bombarded the Japanese group, and these two fires immediately stopped the Japanese advance.

The attacked Japanese troops were unable to deploy their firepower and were in a hurry to dig personal bunkers in the sand. At 9 a.m., 150 tanks of the 11th Soviet Tank Brigade opened fire on the Japanese troops who were cowering in dune bunkers, and the Japanese troops who lacked anti-tank fire suffered heavy casualties.

On September 11, the Kwantung Army command ordered the offensive to be halted and the front was reorganized, and it was decided to increase troops to the Nomenkhan front. They transferred an independent field heavy artillery wing from the mainland and an anti-tank rapid-fire artillery squadron from the territory of the Republic of China, which greatly strengthened the firepower of the Japanese army and enhanced the anti-tank capability of the Japanese army.

In addition to this, the Japanese army also sent a secret unit - the Ishii Force, which is also known as the notorious Unit 731.

On September 13, 22 daredevils led by Ishii Bacteriological Troop led 22 death squad members to take two rubber rafts to sprinkle 22.5 kilograms of typhoid, cholera, plague, melioidosis and other bacteria into the river water in the Halaha River to carry out bacteriological warfare against the Soviet-Mongolian army.

However, what the Japanese army did not expect was that the Soviet-Mongolian army did not suffer much damage from the 22.5 kilograms of bacteria, but 1,340 soldiers of the Japanese army were infected with typhoid fever, red dysentery and cholerosis, and more than 40 military doctors and death squad members of Unit 731 who spread bacteria were infected by bacteria and died.

On September 23, after half a month of replenishment and recuperation, the Japanese army concentrated 25,000 troops and 82 artillery pieces on the Normenhan front to launch a general attack. On the 24th, the Soviets launched a counteroffensive, and the Japanese retreated. On the 25th, the Kwantung Army Headquarters issued an instruction to "stop the offensive and build a position."

On October 4, in order to implement unified command, the Japanese army established the 6th Army (under the jurisdiction of the 23rd Division, the 8th National Border Garrison, etc., and the commander was Lieutenant General Ogishu Libing) in Hailar, with a strength of about 25,000 troops.

In order to settle the fighting in the Normenkhand area at an early date, the Soviet High Command decided to expand the 57th Special Army in Prague, Tamchag, into the 1st Army, which was a large corps temporarily organized with independent combat functions and a combination of multiple arms, and Zhukov was appointed commander of the group army.