More than half of the casualties of the fifth squad of the army were killed, and it was not until the troops attacked the branch cave and found that there were few remaining enemies in the cave, and then they realized that the confrontation just now had killed the enemy's main force.

The next battle was carried out step by step, sweeping through the holes one by one, killing the remaining enemies and rescuing the trapped troops, but there should be more than 50 people in six squads in the six caves, but only more than 20 people were rescued in the end, including none of the officers, and only two squad leaders.

What made Luo Qi even more crazy was that all six holes were blocked, and he couldn't find a way back to the shaft.

He really wanted to go through the six holes and see the situation of these holes with his own eyes, but time did not allow him to do so, so he could only report the results to Ye Han in frustration.

Ye Han said without hesitation: "Give me a punch!" There are so many holes, there is always one that can get out...... Don't grind, hurry up! ”

"Yes!" Luo Qi didn't dare to delay, hurriedly organized the troops, and continued to march to the depths of the main cave.

The first hard bone to continue the offensive was 508, but after rescuing more than 20 people, the embarrassment of insufficient troops was greatly alleviated, and the troops rushed to 508 under the leadership of Luo Qi.

The soldiers guarding here moved to the front of 508 under Luo Qi's order, and sixty or seventy meters ahead was 509, and behind 509 was a turn, and 510 could not be seen.

As soon as Luo Qi gave the order, the soldiers who had been prepared immediately threw grenades into the hole, and then two machine guns rushed into the hole under the cover of the explosion, and the cave immediately resounded with dense gunfire.

The others followed, and it didn't take long for the team of more than thirty people to rush in, leaving only a few people on the defensive line outside the cave.

At such a juncture, a group of enemies suddenly rushed out from behind the curve, and at the same time, another group of enemies rushed out of 509, and the two waves of enemies joined forces, and the dense aliens launched a decisive charge to the thin defense line regardless of life and death.

Cao Lipeng, who was guarding the defensive line, had straight eyes, and subconsciously roared: "Fire-"

In an instant, the gunfire was loud, and everyone opened fire fiercely regardless of losses, and the dense bullets flew like a rain of bullets towards the enemy, sweeping down the front enemy layer by layer.

But the enemy behind immediately made up again, the enemy was as turbulent as a rolling tide, if it weren't for the limited volume of the main cave, the enemy army could only be crowded together and couldn't disperse, just the dense silken light was enough for Cao Libin to drink a pot.

Seeing that the enemy army was getting closer and closer, Cao Libin immediately realized that the situation was not good, and shouted while shooting: "Enemy attack, Battalion Commander Luo, request for support ......"

There were only five people on the defensive line, including Cao Libin, and only one machine gun, which could not stop the enemy's attack at all.

"Hold on, it's coming soon!"

"Hurry up, I can't hold out for long......"

At this time, a figure swooped down behind the defensive line, picked up the rifle is a shuttle, and after running out of bullets, he changed the magazine with one hand with extremely skillful movements, pulled the bolt and continued to fire.

The people present are all veterans, and there are many who can do this, but there is no one who can play so smoothly in actual combat.

Cao Libin took advantage of the time to change the magazine and glanced back, and his eyes widened in astonishment: "Division, commander......"

"Less nonsense, shoot Lao Tzu quickly!" Ye Han's movements were not affected at all by speaking.

"Yes!" Cao Libin quickly regained his mind and continued to fire at the enemy.

Although Ye Han joined the new force, the enemy army was strong, and the aliens charged against the corpses of their companions and quickly approached the defense line.

The fighters on the defensive line had three options:

1. Continue to hold the line of defense until it is overwhelmed by enemy forces.

2. Withdraw to 508 and join the main force.

3. Take the initiative to retreat and exchange space for time.

The result of the first two options must be that the troops are blocked by the enemy into 508, and even if they fight again, the entire passage must be re-cleared; The third option is relatively better, but it's just a little bit better than the tallest of the short.

There are only a few people on the defensive line, and one less will affect the density of firepower, and in the process of retreating, they will inevitably leave the bunker, and they are likely to be hit by mercerized light.

Time did not allow Ye Han to hesitate, he really ordered the troops to retreat, and then turned around and ran back...... The first retreat does not mean safety, but leaves the cover of the bunker and may become a key target for the enemy.

Ye Han stopped immediately after crossing the hole of 408, turned around and continued to shoot at the enemy: "Next!" ”

Cao Libin kicked the soldier next to him: "Withdraw!" ”

The warrior did not hesitate to raise his leg and run.

In this way, the fighters on the defensive line retreated one by one, and in the end only Cao Libin and the demomen who came to count the guard battalion were left.

At this time, the enemy army was only more than 30 meters away from the defense line, and Cao Libin took out a grenade and shouted: "Withdraw!" ”

The Demoman drained the last grenade in the launcher, grabbed the submachine gun behind his back and slammed the trigger; "You ...... first"

"I'm the squad leader......"

The tall demoman kicked Cao Libin away: "Lao Tzu doesn't care what you look like!" ”

Cao Libin gritted his teeth, threw out the grenade, and then fired at the enemy while retreating, doing his best to delay the enemy's advance.

However, the firepower on the human side was too thin, and as soon as Cao Libin retreated, the enemy had already rushed to the front of the defense line, less than ten meters away from the defense line!

Ye Han yelled: "Come back soon......"

The enemy was so close that the Demoman knew he couldn't retreat, so he quickly pulled out his magazine and prepared to replace it, but before he could replace it, several aliens suddenly pounced on him and held him down like arhats.

The Demoman struggles, but he can't stand the crowd of the opponent, and he can't break free from the enemy's shackles despite his best efforts.

He was desperate, gave up struggling, and shouted with all his strength: "Commander, don't forget my ......" A thought flashed through his mind, and he instantly shot the explosive bag on his back.

Boom –

The ground shook and the mountains shook, and a ball of flames instantly covered the main cave more than ten meters long, completely submerging everything, and even Ye Han and the others, who were dozens of meters away, were blown to the ground by the strong shock wave.

The flames in the vacuum came and went quickly, and when Ye Han stood up again, the flames had already dissipated, the enemy vanguard was all wiped out, and those who did not die were also shaken to the ground, and the momentum of the charge was slowed down - there would have been no shock wave in the vacuum, but the explosion of explosives produced a large amount of gas, which was bound by the cave wall, thus generating a strong shock wave in the tunnel.

Ye Han seemed to have a string in his head that suddenly broke, he wanted to shout, but there seemed to be something in his throat, he picked up his rifle and hugged the fire, and spit out a few words from between his teeth: "Call me!" ”

There were so many enemies that he didn't aim at all, he just shot his bullets at the enemy soldiers, and swept down seven or eight enemies who had just recovered a little in one go.

At this time, the enemy in the rear rushed up, and immediately fought back after seeing Ye Han and the others, Cao Libin's pupils shrank sharply, and he suddenly kicked Ye Han away, and was immediately hit by more than a dozen silky lights.