At this time, the Japanese troops inside and outside Yangyuan City did not notice that the main force of the Independent Brigade had been killed under their noses, in fact, it was Nanda Taijiro who did not expect that Li Yunlong would send troops so quickly after the main force of the Independent Brigade had only been resting for about a week, and he was still fighting their 31st Brigade.

In the city, in the temporary devil headquarters of the 31st Brigade, the senior officers of the devils drank very happily. Some of these devil officers were so happy that they were already drunk and couldn't afford to fall. Unaware of the slightest, the main force of the Independent Brigade was already approaching the city and preparing for a surprise attack.

However, Taijiro Nanda, who summoned his devil officers to eat and drink in the city, did not send vigilance, and still deployed defensive forces to control the mountains outside the city to control the mountains outside the city, so as to control and contain Yangyuan Castle.

"Bang Bang Bang !!!"

Suddenly, in the sky above the south of Yangyuan City, several huge signal flares and fireworks suddenly exploded, which were very bright when it was already approaching evening.

Sajiro Ando, who was close to the entrance of the 31st Brigade Division, was shaken by the fireworks that exploded in the direction of Nanjo outside the gate, and immediately looked up at the sky outside the gate.

As soon as he saw the fireworks exploding in the sky, Sajiro Ando immediately sobered up, stood up and walked out of the door, his eyes wide open, and he stared at the fireworks in the direction of Nancheng in a daze.

"What's going on?" Sajiro Ando is familiar with the battlefield, and the old devil knows what it looks like after the signal flare explodes in the sky. This can't be fireworks, not to mention that after the devils of the 31st Brigade entered Yangyuan City, there was no one on the streets, and the common people knew that sometimes burning, killing, looting or something happened from time to time after the devils entered the city.

Therefore, at this time, it is impossible for the people of Yangyuan to burn fireworks and firecrackers!

Without waiting for Sajiro Ando to wave his hand to let people go out and have a look, a burst of violent explosions suddenly broke out!

"Boom, boom!!"

"Dada!!"

..............

The sound of gunfire came from the direction of Nancheng, and the fierce gunfire immediately woke up Sajiro Ando, who was in a hurry.

"Baga, enemy attack, enemy attack!"

Sajiro Ando shouted angrily and ran into the brigade headquarters, walked to the side of the brigade commander Taijiro Nanda, who was not yet drunk, and roared!

Taijiro Nanda was yelled at by Sajiro Ando, and it was unpleasant to be yelled at like this in the middle of his fun.

But with the violent gunfire from the direction of Nancheng, the old devil also ran to the door with one footstep and saw the gunfire of the fierce battle in the direction of Nancheng in the evening.

"Ando-kun, order all troops, meet the attack, meet the attack!"

Nanda Taijiro looked at the bright light of the explosion in the direction of Nancheng and the continuous sound of violent gunfire, and his head, which was already slightly drunk, immediately sobered up, and immediately shouted at Sajiro Ando.

"Hai, General!"

Sajiro Ando immediately drove back the five or six officers at all levels under the jurisdiction of the Devil Brigade who had gathered at the brigade headquarters and commanded all the units to meet the battle.

After a meal, all the devil officers gathered at the 31 brigade headquarters went back to their respective devil units to command the counterattack. At this time, it was not known what troops were raiding the 31st Brigade in Yangyuan City, but it was clear that the opponent's offensive was very fierce. Moreover, the combat goal is the same, and the concentrated forces are raiding the commanding heights of the mountains outside the south of Yangwon City.

Once the commanding heights of the mountains outside the southern city are captured by the enemy, the main force of the 31st Brigade of the Japanese army in Yangyuan City will inevitably encounter the enemy's condescending firepower on the mountains outside the city.

As soon as he thought of this, Nanda Taijiro had already been completely drunk in the rumbling gunfire in the direction of Nancheng, and there was no trace of him.

At this time, outside the southern city of Yangyuan, the 163rd Wing of the 31st Brigade of the Japanese Army placed two Japanese infantry brigades on the Yumai Mountain of Hengshan Mountain, which stretched outside the city, with a total of 23,400 people.

Although the signal flare was sent out at the first time, Li Yunlong commanded the 1st, 2nd, and 3rd regiments to launch a fierce attack. But the little devil still had a reaction mechanism and actually blocked the attack of the three regiments.

In particular, the 163rd Wing, which is responsible for defending the mountains outside Nancheng, is the main wing of the 31st Brigade, and it is still brave and good at fighting.

The commander of the 163rd Wing of the devil, Ogihara Matsudai Daisa, was born in the Japanese Army Military Academy and had rich combat experience, so he did not go to the city for a banquet in the evening. Instead, he sat at the head of Nancheng to defend himself, and as soon as he saw the signal flares and fireworks exploding over Nancheng, Ogiwara Matsudai immediately called the Japanese troops under his command to launch a counterattack.

All of a sudden, the three main regiments of the raiding independent brigade did not make smooth progress when attacking the mountains outside the city.

Li Yunlong couldn't sit still, and it had been three minutes since the battle began. The battle was actually fierce, and the number of devil defenders in the mountains outside the southern city was far stronger than observed!

"Made, order the artillery battalion, concentrate artillery fire, and knock out the artillery positions erected by the Japanese army on the hill at the head of the southern city and in the mountains outside the city! Fast! ”

Li Yunlong held the binoculars, saw that several regiments were attacking unfavorably, and could not sit still, so he waved his hand and shouted to a brigade headquarters staff officer standing beside him.

"Understood, Brigadier Commander!" Then he walked away and deployed.

Soon, Wang Chengzhu commanded the artillery battalion to concentrate all artillery fire and carry out fierce artillery bombardment on the artillery positions of the Japanese defensive positions in the southern city of Yangyuan and the defensive positions of the Japanese army outside the city, so as to cover the attack of the three main regiments commanded by Zhang Dabiao and others on the Japanese troops in the mountains outside the city.

At this time, the captain of the 163rd Wing of the devil standing at the head of the southern city, Di Ye Songtai, had been blown up by the artillery fire of the independent brigade and fled from the city, and hid in the hidden soldier cave under the city wall to command!

"Hurry up, report to the brigade headquarters that there are at least five thousand enemy troops storming the defenders of our southern city, ask for reinforcements, ask for reinforcements!" The fierceness of the gunfire made Di Ye Songtai unable to withstand it. With such a fierce artillery fire, as well as the ballistic white light from countless light and heavy machine guns, Di Ye Songtai was terrified when he saw it, could it be that the elite main force of the national army suddenly killed them under their noses?

At this time, because it was already evening, the three main regiments of the Independent Brigade attacking the mountains outside Nancheng City were not immediately seen by Di Ye Songtai as the troops of the Eighth Route Army, and thought that they were the main forces of the National Army.

"Hay, Captain!"

A devil staff officer who protected Di Yesong from the city was also in a hurry, picked up a phone in the Tibetan soldier cave and dialed it to report the battle situation to the headquarters of the 31st Brigade of the devil in the city.

In the city, the headquarters of the 31st Brigade of the 110th Division of the Japanese Army, Taijiro Nanda asked the devil staff officer of the brigade headquarters to take out the map of Yangyuan and unfold it, with a solemn look in his eyes.

The sound of gunfire has already been heard from the four gates around Yangyuan City, indicating that there are many enemy troops attacking and it is premeditated.

"Report to the brigade commander, the 163rd Wing of Nancheng called, there are at least 5,000 enemy troops in the mountains outside Nancheng, and it is not clear which Chinese army it is for the time being! The 163rd Wing asked for reinforcements, the enemy artillery fire was fierce, and the 1st and 3rd Infantry Brigades of the 163rd Wing outside the city were concentrated by the enemy's artillery fire and suffered heavy casualties! I'm afraid it won't last long! ”

Soon, the field phone on the table of the Devil Brigade Headquarters rang, and a Devil Staff Officer answered it and reported urgently to Taijiro Nanda!

"Order the tank squadron to dispatch Type 95 tanks to reinforce the direction of Nancheng! Once Nancheng loses, we will be passive! Nanda Taijiro didn't think for long, and immediately ordered Sajiro Anto, the chief of staff of the brigade.