Under the command of Major General Kiichiro Matsui, the two infantry brigades of the Japanese army launched one decisive attack after another on the defense line of the 881st Regiment. The spirit of bushido still could not stop the guns and bullets, and the path of the charge was littered with the corpses of Japanese soldiers.

Less than an hour after the Japanese launched a decisive charge, fierce gunfire rang out behind them, and the sound of gunfire suddenly sobered up Lieutenant General Maruyama Masao. Behind him, there are Chinese troops chasing with the cooperation of chariots, and now in the face of the Chinese army, which is superior in all aspects, he can only stubbornly wait for reinforcements. Lieutenant General Maruyama Masao, who understood this, immediately ordered his troops to stop the offensive and switch to a reduced defense, and at the same time urgently telegraphed Lieutenant General Jun Imamura, commander of the 16th Army in Hanoi, to ask for help.

At this time, the Japanese army stopped attacking, but the original 3 or 4,000 men and horses lost more than 1,000 people. Major General Kiichiro Matsui could only instruct the remaining soldiers to find a suitable place on the side of the road to huddle into a ball and urgently build some fortifications. Soon after, the 29th Infantry Wing, led by Wing Commander Tokio Hashimoto, arrived to converge. After the convergence, the 2nd Division had less than 5,000 men and horses, and there were not many heavy weapons.

Lieutenant General Imamura was worried about the situation in Bakae City at the headquarters when he received a telegram from Lieutenant General Maruyama Masao asking for help. The day before yesterday, when Lieutenant General Maruyama Masao called to say that Chinese troops had been discovered in the county town of Bac Ninh, Lieutenant General Imamura Jun was taken aback, but he did not pay much attention to it. He also judged that this was a small force sent by the Chinese army to block Hanoi's reinforcements to Bac Giang.

Yesterday, telegrams for help from Bac Giang City were sent one after another, and Lieutenant General Imamura Jun once again telegraphed Lieutenant General Maruyama Masao to intensify his attack and defeat or eliminate the small Chinese army in Bac Ninh County as soon as possible. Lieutenant General Maruyama Masao also replied that he was stepping up the attack and had made progress. However, early this morning, Lieutenant General Maruyama Masao called to say that the Chinese troops in Bac Ninh were not small units, but elite units with many artillery pieces and chariots, and that the Second Division had suffered heavy casualties in the night attack in the early morning, and had lost most of its heavy weapons when retreating, and was now surrounded by superior Chinese troops 40 kilometers from Hanoi, and asked Hanoi to send troops to rescue.

Lieutenant General Imamura angrily crumpled the telegram into a ball and scolded: "Yaga! Maruyama Masao, you stupid pig, incompetent! Waste! I don't want to be a division commander at all!" After scolding, Lieutenant General Imamura Jun turned around the office with his hands behind his back. The current situation also made him feel very troublesome, there was only one 38th Division and some guard units in the city of Hanoi, and the fortifications of the 38th Division had not yet been repaired, so it was difficult to divide troops to rescue.

However, the 2nd Division and Bac Giang City still had to come to the rescue, so what troops to send became a problem. Lieutenant General Imamura thought about it for a long time, but decided to ask the 38th Division to send an infantry wing to rescue the 2nd Division. In addition, a squadron of combat vehicles and a squadron of rapid-fire guns from the remaining units were sent to assist the infantry wing in its operations. With the decision made, Lieutenant General Jun Imamura immediately called the commander of the 38th Division, Lieutenant General Tadayoshi Sano, over.

As soon as Lieutenant General Tadayoshi Sano arrived at Lieutenant General Imamura's office, Lieutenant General Imamura told him about the matter. Lieutenant General Sano Tadayoshi also felt embarrassed, let's go to the rescue, if we can beat more than 10,000 men and horses of the Second Division to this point, the Chinese army will certainly not be weak; if we don't come to the rescue, there is no such thing as death in the Imperial Japanese Army, and Lieutenant General Imamura Jun can't refuse.

Lieutenant General Tadayoshi Sano hesitated for a long time, but decided to obey the order. Lieutenant General Tadayoshi Sano replied, "Your Excellency, the 38th Division is at your disposal. Lieutenant General Imamura Jun Wai Qiang smiled and said, "Yo Xi, I know that Sano-kun will not let me down, the matter is urgent, and I ask Sano-kun to send troops immediately." Everything is up to Sano-kun, and when Sano-kun succeeds in rescuing the second division, I will ask for credit from the Southern Army Headquarters for Sano-kun. ”

After Lieutenant General Tadayoshi Sano returned to the division headquarters, he immediately called the wing commander of the 228th Infantry Wing, Yoshinao Toda, and ordered him to immediately lead his men to the direction of Bac Ninh County to rescue the 2nd Division. Toda Yoshinao did not dare to delay, and immediately gathered his troops out of the city, and at the gate of the city, a squadron of chariots and a squadron of rapid-fire guns that were ready to act with them had been assembled and waiting for them.

Not long after Toda Yoshinao's troops left the city, they were discovered by the reconnaissance team of the reconnaissance brigade guarding outside the city. So several telegrams were sent to Wang Haitao, Tang Longzai and Wei Erxi respectively. Wang Haitao was in charge of the overall situation, and he believed that Wei Erxi would have a countermeasure, and did not interfere with Wei Erxi's command. And Tang Longzai was paying attention to the general attack of the 462nd Brigade on Beijiang City, and he did not interfere with Wei Erxi, but just sent a telegram to remind Wei Erxi to be more careful.

Wei Erxi received the telegram and was surprised and delighted. Fortunately, the Japanese army sent reinforcements from Hanoi to rescue the 2nd Division; fortunately, the Japanese army only sent an infantry wing, so that with the cooperation of the reconnaissance brigade, the pressure on the guard battalion was not too great. Despite this, Wei Erxi still telegraphed Wei Lixuan and Chu Zhengyang, the two commanders, to deal with the Second Division as soon as possible.

The 5,000 men of the 2nd Division were now surrounded on all sides in a small field with a small village of only a dozen families, which became the core of the 5th Division's defense, with Lieutenant General Maruyama Masao and Major General Matsui Kiichiro in a grass hut in the village. The two squadrons filled the small village to the brim, and the rest of the forces were rushing around the village to repair the trenches and bunkers.

In the southwest of the 2nd Division, the 2nd Battalion of the 881st Regiment broke out of their positions and took part in the encirclement of the 2nd Division. To the northwest was an encirclement force consisting of the reconnaissance battalion of the 462nd Brigade and twelve reconnaissance groups of the reconnaissance brigade.

The reconnaissance battalion had already laid an ambush on the left side of the 881st Regiment's blocking position, and the battalion commander Ma Jiangsheng was originally going to take the opportunity to join the battle after the Japanese army was tired from attacking several times, but the Japanese army suddenly stopped attacking for a while, and instead contracted the defense. As soon as they rushed out of the ambush site, they encountered reinforcements from the reconnaissance brigade, so the two sides rushed out together.

To the northeast was the 1st Battalion of the 881st Regiment and the Light Armored Vehicle Company that were beaten by the 29th Wing of the Japanese Army. Along the way, they basically did not encounter any decent obstacles, that is, some of the Japanese troops left behind were also insufficient, and the most was an infantry squadron, more than 200 people. With the coordination of light armored vehicles, a charging Japanese army could only be defeated. The pursuit was not until the Japanese army was hugged, and the first battalion stopped.

To the southeast are several other battalions of the 881st Regiment and a company of light tanks and heavy armored vehicles. Seeing that the Japanese army had formed a group and was waiting for reinforcements, and that there were troops surrounding the Japanese army in the other three directions, the regiment commander Chu Zhengyang led the troops to turn to the southeast direction of the Japanese army and surrounded the Japanese army on all sides. After encircling the Japanese army, Chu Zhengyang and Wei Lixuan met each other.

Now Chu Zhengyang's attack force here is the strongest, and the light tank company and the heavy armored vehicle company are almost invincible in front of the Japanese army without heavy weapons. As soon as the two regiment commanders met and discussed, it was decided that Chu Zhengyang would be the main direction of attack, and that before the attack, the self-propelled howitzer and artillery battalions would first carry out artillery strikes on the Japanese army, and serve as fire support during the attack.

Because the 881st Regiment launched an attack in the early morning and has not rested for several hours now, Chu Zhengyang was afraid that the soldiers' physical strength would not be able to keep up, so he was ready to let the soldiers rest and launch an artillery bombardment on the Japanese army half an hour later. At this moment, Wei Erxi's telegram arrived. Chu Zhengyang and Wei Lixuan saw that the matter was urgent, and they had to immediately launch an attack on the second division.

Wei Lixuan first ordered the self-propelled howitzer and artillery battalions to shell the Japanese troops for 20 minutes, and then stood by in place, ready to provide fire support to the attacking troops at any time. Of the three battalions left in the blocking position, except for one platoon left to guard the position, all the rest of the fighters reinforced the guard battalion, and all the mortars in the regiment were transferred to the guard battalion.

Chu Zhengyang also ordered the armored troops and the second and third battalions to prepare for the attack, and when the artillery attack was over, they would launch a surprise attack on the positions of the second division. The heavy fire battalion suppressed the Japanese fire points with heavy machine guns, leaving the fighters to hold their positions. The first battalion also left a company to hold the position, and the rest of the fighters attacked with light armored vehicles. Soon after the order was transmitted, the 18 self-propelled guns of the self-propelled howitzer and artillery battalion of 105 caliber roared.

Artillery and shells screamed and landed on the positions of the 2nd Division, blowing up the fortifications and bunkers that the Japanese had built in a hurry, and at the same time, many Japanese officers and men fell under the shelling. However, the number of eighteen self-propelled grenades and artillery guns was still too small to cover the Japanese positions at all, and the casualties of the Japanese troops in the shelling were not very large.

Twenty minutes later, the shelling stopped, and the armored units, spearheaded by light tanks, formed a triangular offensive formation, and with the roar of the engines, launched a surprise attack on the defense line of the 2nd Division. Behind the armored units were officers and men of the 2nd and 3rd Battalions who accompanied the attack. At this time, the Chinese army had an overwhelming advantage. On the Japanese position, a small number of heavy machine guns began to roar, trying to stop the surprise attack of the Chinese army.

These heavy machine gun fire points were completely useless in front of the light tank, and the bullets hit the light tank, except for the clanging sound, leaving only a little dent. On the contrary, their return fire attracted the attention of the light tank, and under the blow of the tank's on-board artillery, these heavy machine gun fire points were quickly destroyed.

The Japanese army knew that there was no way to escape, and the Second Division must have been a permanent division regiment and a veteran force in the Japanese army. As the armored units approached the Japanese positions, a large number of Japanese soldiers gathered in the market with explosives and pill packs*, shouting, "Your Majesty the Emperor, Itaza!" and rushed towards the tanks and heavy armored vehicles. Although countless Japanese soldiers fell under the vehicle-mounted machine guns, there were still Japanese soldiers rushing to the tanks and armored vehicles to pull off explosives, pill packs, and clusters*.