As expected by the three dogs, in the end, the devil still began to cast poison gas, and to deal with this kind of battle in the cave, many people will think of using water, smoke, sand, etc., or directly sealing the entrance of the cave and suffocating the people inside.

These methods are only aimed at a hole or a dead hole without a vent or outlet, and it is a huge project to carry water and sand up the mountain.

It is a good way to burn the fire and blow smoke inside, but the inside of this pit is too big, and Sangou followed his classmates under the leadership of Lao Hei to dig it out for a long time, and there are designed vents and water outlets, etc., how much firewood has to be burned, and it may not be able to smoke the people hiding inside.

But poison gas is different, as long as it smells, people lose their combat effectiveness, wait to be caught and killed, and if it is serious, they will be poisoned on the spot.

Now it was not completely dark outside, and Sangou didn't dare to escape from another hole with everyone, but now, after the devil threw in a number of poison gas grenades, Sangou and they only heard the grenade thrown in, but they didn't hear the explosion, and they didn't see the devil come in.

After a while, none of these grenades exploded, but they continued to smoke, and the brothers in front of them immediately coughed loudly. Needless to say, this must have been a gas bomb.

The three dogs were so anxious that they didn't have time to pass on the code from one to another, and shouted loudly, asking everyone to find a gas mask to put on, and it turned out that the teaching corps regarded this place as one of the warehouses, and there were still some gas masks stored in it, but there were not many, only about thirty.

This is troublesome, now there are all about 80 people, Sangou can only let some people wear it first, if not, take a towel or clothes, soak it in water and cover it on their mouth and nose, overcome the tension, let the heart rate slow down, and breathe slowly.

In addition, he asked people to put some temporarily unusable materials in the warehouse, such as clothing and wood, in the center of the tunnel and burn them, and use the effect of the heat to catch up with the poisonous gas.

Some of the hidden vents on this mountain began to slowly emit poisonous gases all around, but because it was almost dark now, the vents were very small and emitted, and if you didn't look carefully, you couldn't see it all at once.

The poison gases of the Japanese army at that time were tear-jerking phenylchloroacetophenone, vomiting biphenyl arsenic chloride and biphenyl arsenic cyanide, erosive mustard gas and Lewis gas, and occasionally asphyxiating phosgene, potassium chloride pyridine and cyanic acid gas.

Fortunately, this time the Japanese army only released tear gas bombs, not terrifying mustard gas and other erosive ones, otherwise none of the three dogs would have survived.

Fortunately, it was not suffocating, the three dogs were burned with fire to drive away the poison gas, but it was more dangerous, it was originally suffocating, and the few oxygen in the cave were burned out, and everyone had to suffocate to death with gas masks.

It is estimated that the devil also thought that he would go down to the cave and catch or kill these Chinese soldiers, so that he could make a difference to the top, so the ordinary poison gas that was cast, or, the devil at this level, can get his hands on it, that is, this low-level poison gas.

Even if it's a low-level poison gas, it's very powerful, especially the devils took a lot of it, and some devils threw a lot of poison gas bombs into the hole in order to avenge their dead teammates.

This kind of super-saturated poison gas attack, the density of poison gas in the air is getting more and more, and Sangou has no choice but to send someone to pry open another hole, so that the brothers who do not have gas masks can temporarily go out to avoid it.

This opening is more hidden, the entrance of the cave is sealed with stones and mud, and the outside is integrated with the mountain, and it is also planted with firewood and grass, and from the outside, you can only see a steep slope with firewood and grass.

With nearly fifty or so people, Tienon hurriedly opened a small hole from the inside, carefully observing the situation outside, and now the sky outside will not be dark, fortunately, there is no sign of the enemy nearby for the time being.

Everyone slowly opened the small holes that one person could climb out of along the entrance of the cave, and climbed out one by one, although they were uncomfortably weakened by the poisonous gas, but those who climbed out first immediately spread out in all directions, looking for terrain and trees to rely on, and guarded.

……

Sangou didn't let the thirty or so brothers wearing gas masks also escape for the time being, he still wanted to guard the tunnel first, clean up these devils, and then infiltrate the city in the middle of the night, looking for an opportunity to escape from Nanjing.

With the light of the fire burning in the cave, the three dogs took the lead and ordered the thirty or so brothers to change into the military uniforms of the devils, including weapons and ammunition, and all of them were replaced by devils.

Everyone wore Japanese-style steel helmets with net pockets, and all the rifles were replaced with 38 rifles, which were collected along the way and in the cave, and dozens of pairs of devil military uniforms and weapons were collected, which came in handy.

All of them also wore the devil's big scalp shoes, and even melon grenades, aluminum lunch boxes, bullet bags on the front and back of their waists, etc., as long as they didn't open their mouths, they were almost the same as the devil soldiers.

At the same time, he also signaled everyone to bring as many compressed biscuits as possible and fill the kettle with spring water in the cave, which is tantamount to telling everyone that they are ready to break through.

In order to prevent accidents, Sangou sent Li Guangben as a liaison to the entrance of another cave and told the brothers who were already outside that all the brothers in the cave had changed into devil costumes.

However, in order to distinguish, everyone wrapped a white towel around their necks, and also set up tonight's passwords, code words and even hand gestures to avoid accidental injury.

After waiting for a while, Sangou finally waited for the devil to enter the cave again, and by the faint light of the fire in the cave, he saw that the devil was also wearing a gas mask.

Coincidentally, the devils came down this time with nearly thirty people, there were twenty-five people, almost enough, seeing the devils with gas masks slowly entering the tunnel, ordinary people would probably be scared enough.

In the flickering cave, a group of ghost-like people with gas masks similar to skulls are walking silently, which is indeed very scary.

When the devil touched the middle and late part of the tunnel, the three dogs were afraid of hitting the shoulders of the comrades around them, and the comrades-in-arms were afraid of hitting them all the way, so everyone followed the three dogs and turned behind the devil from another extremely hidden doorway in the tunnel.

The devils who have suffered a lot in this cave, even in the cave where the poison gas is cast, are still very cautious, and in order to avoid a pot end, the devils keep a certain distance one by one, and are slowly touching the root of the wall.

Such a distance just gave the three dogs their chance, Peng Changhua and Yang Chengzu took the lead all the way, approaching the last devil lightly, the two cooperated, one grabbed the gun, and the other slashed.

Because the devil was wearing a gas mask, he was suddenly attacked by a cold knife, and he really couldn't make a sound all of a sudden, so he put it in a ghost, and the people of the old seventh company on the side of the three dogs made up for it.

Because the whole body is almost the same, even if a few devils look back, they just vaguely blur the location and number of people, and they can't speak, and when they see exactly the same, they naturally think it's their own people.

Although the people of the old seventh company are not very prominent in frontal battles, they have fought a lot of flexible battles along the way in the past few months, and everyone has been very slippery about this kind of attack in the dark night.

……