After the pre-war meeting, Li Yunlong, deputy commander of the 4th Division, and others immediately returned to their respective command posts and began to deploy for the attack.

Then the excavation began overnight, and after more than two hours, the communication trench was finally advanced to a place less than 100 meters from the forward position of the Japanese army.

The forward commander transmitted the news back to Li Yunlong at the division headquarters, and after Li Yunlong got the news, he immediately informed the column headquarters of this information.

Qiao Youhua immediately ordered all the artillery units present and the tank groups that had quietly entered the positions and could carry out artillery strikes on the Japanese positions to immediately cover the enemy positions.

With his order, hundreds of artillery pieces and tank guns opened fire one after another, and in an instant, countless dazzling scarlet fireballs roared into the air, which looked particularly dazzling in the dark night.

I am a good person, I am a good person, I am a good person...... The whistling sound of the shells in the air was even more harsh, and the devil soldiers and puppet soldiers in the Japanese fortifications were all alarmed and woke up from their sleep.

However, the artillery attack came too suddenly for them, and before they could react, the first wave of shells from the Dragon's Tooth Column fell viciously.

Then there was an unusually violent explosion, boom! Bang! All kinds of explosions sounded one after another, clusters of dazzling fires rose to the ground, and the blast wave of the explosion carried countless shrapnel to fly in all directions, and countless devils and puppet soldiers were shot one after another, screaming again and again, and fell down one after another.

In the trenches of the Japanese position, it suddenly became a sea of fire, the scarlet fire continued into patches, and occasionally a few devil soldiers or puppet soldiers who were on fire jumped out of the sea of fire with screams, let out a terrible howl, and were finally burned alive.

In order to ensure the suddenness of this surprise attack, Qiao Youhua did not let his artillery fire last too long, and after only ten rounds of salvo fire covered, he ordered the shelling to stop, and then Li Yunlong immediately ordered the attack troops of the 4th Division, which had already been prepared, to immediately turn over from the dug trench, swarm out, and launch a charge against the Japanese position that was still in a sea of fire.

"Comrades, the commander-in-chief, the deputy division commander and other leaders are watching us from behind! Take out the courage and vigor that are not afraid of death, fight with the little Japanese devils, swear to seize the enemy's position, and clear the obstacles for the follow-up large army to recover Tianjin! Come on! At the beginning of the charge, a battalion-level officer armed with a submachine gun raised his arms and shouted.

Under his infection and drive, the officers and soldiers of the Dragon's Tooth Column who participated in the charge roared in unison: "Rush! Kill......"

Desperately rushed forward, and soon, they successfully rushed into the Japanese position, at this time, the Japanese position was still filled with thick smoke, fires were everywhere, and the Japanese puppet army with many casualties was in chaos.

The officers and soldiers of the dragon tooth immediately opened fire one after another, and all kinds of weapons were greeted to the Japanese position, and the surviving devil soldiers and puppet soldiers were thrown to the ground in groups.

The officers and soldiers of the dragon tooth took advantage of the situation to continue to charge forward, and when they were about to take the enemy position in one go, the reinforcements sent by the enemy headquarters in front of the devil arrived, which was a wave of reinforcements of about five or six hundred people.

All of them were Japanese troops, and they swarmed forward along the communication trenches, rushing towards the attacking force of the Dragon's Tooth Column, which was supposed to be a reserve of the devils, and as soon as the two sides came into contact, a fierce exchange of fire broke out.

Although the reinforcements of the devil were not afraid of death, they lost the cover of their positions and exchanged fire with the attacking troops of the Dragon's Tooth Column, which were equipped with a large number of advanced weapons, and were obviously not opponents.

In just a few minutes, the devils were suppressed by the strong and dense firepower of the dragon's tooth attack force, killing and wounding nearly 100 people, and the remaining devils were also forced to hide in the nearby trenches and fortifications to continue to resist stubbornly.

The officers and men of Longya immediately increased their fortifications, gradually advanced along the trenches, and formed a dense and powerful assault fire with submachine guns, general-purpose machine guns, and grenades, which quickly routed this Japanese reserve force.

By the time the devils sent more reinforcements to arrive, it was already too late, because as their own vanguard successfully attacked the enemy's position, more combat units of the Fourth Division were dispatched, and the tank regiment was even more in the lead, driving to the high ground and joining the offensive against the enemy.

With the addition of more and more dragon tooth troops, the devil's disadvantage in strength became more and more obvious, under the powerful offensive of the dragon tooth column and the coordination of the infantry tan, a large number of Japanese puppet troops, especially the puppet army, after paying heavy casualties, completely lost their sense of resistance, and turned around and ran.

The devil was unable to stand alone, and the will to resist was soon crushed, and then the entire defense line collapsed with the withdrawal of the Japanese soldiers, and the 4th Division of Longya successfully broke through the Japanese defense line in one fell swoop, tearing a big hole in the outer defense line of the Japanese army in Tianjin.

"Commander, I am fortunate to have successfully captured the Japanese position and broken through the enemy's outer defense line, and at present, the regiments of our division are pursuing the remnants of the Japanese puppet army and marching in the direction of Tianjin City." After the battle, Li Yunlong, the deputy division commander, came to the former enemy headquarters and saluted and reported to Qiao Youhua.

Qiao Youhua said: "Very good, you have performed well, I will report to the organization when I go back, and ask you for credit, and then we will take advantage of the situation to take Tianjin." ”

After speaking, Qiao Youhua said sharply: "All divisions, regiments, and troops directly under the column will immediately attack in an all-out manner and attack Tianjin!" ”

Li Yunlong, Liu Yidao, Jiang Haidong and others straightened up and responded in unison: "Yes!" ”

With Qiao Youhua's order, the 1st and 4th divisions, the air defense brigade, heavy artillery brigade, tank armored brigade and other troops directly under the column, nearly 100,000 troops, formed a huge attack group, and advanced from the Wuqing area to the Tianjin urban area.

On the Japanese side, after Okamura Ninji learned that the defense line around Wuqing had been broken through by the enemy and the main force of the Dragon's Tooth Column was attacking, he was so angry that he immediately ordered to shoot several Japanese puppet army officers who had fled back from the Wuqing front.

Then the Japanese puppet army in the extreme vicinity of Tianjin was urgently transferred to enter the second line of defense, which had not yet been completed, and prepared to resist the eastward advance of the main force of the Dragon's Tooth Column.

The second line of defense of the devil outside the city of Tianjin, not far from the city wall, is built against the city wall, there are various trenches, tunnels and city fortifications are combined to form an overall defense system.

However, due to the rapid breakthrough of the first line of defense on the periphery by the Dragon's Tooth Column, the devils did not have enough time to prepare, so their second line of defense was not fully completed, and the underground tunnels with the largest amount of work were only about one-third of the way, and the tunnels under the trenches were not connected at all.

This is an extremely advantageous point for the Dragon's Tooth Column, after all, the less prepared the devils are, the less casualties the Dragon's Tooth Column may be.