Several Spanish soldiers looked in one direction with some trepidation, and Soldier A said, "Has the first line of defense been conquered by the Tang people like this?" It's useless for even half an hour, didn't our idiot captain say that this line of defense can hold the Tang people for at least more than a week? I don't think I can hold up even a day at this speed! ”

Soldier B answered: "If the Tang army really wants to fight, I'm afraid that in four hours, this so-called trench composite fortification that we dug out in more than a month will be completely captured by them, but why did the Tang people stop, it seems that they did not lose many people in the attack just now." Pen, fun, pavilion www. biquge。 info”

Soldier C said: "Who knows, they are outside us, and now we don't even dare to pick our heads out, for fear of being hit by them." ”

The distance between the two trenches was actually less than 500 meters, although the distance was relatively long, but for the rifles of the Spaniards and the Don, this distance was not impossible to kill and injure the enemy.

Soldier A said: "The Tang people's cannon is really powerful, we are hiding in the trenches, and many unlucky ghosts were killed just now." ”

Soldier B said: "I've seen them blast through the forts in the valley to the north, my God, it's like the end of the apocalypse, when the artillery bombarded just now, I was almost frightened, if I had known that fighting with the Tang people would be like this, I'm afraid I would have deserted." ”

Soldier C said: "The Tang people are not attacking at this time, but why is my heart still not steady. ”

Soldier A said: "It should be fine, who knows what the Tang people think, we insist on insisting, if we can't do it, we will retreat, anyway, the trenches are connected to each other, I just hope that our idiot officers can wake up quickly and surrender to the Tang people." Otherwise, we're all going to be doomed. ”

He pointed to the trenches that had been occupied by the Tang army and said: "There is almost no one running out there, I am afraid that when the Tang army attacks us, we will be dead." ”

The words silenced several Spanish soldiers, who were not only the regular Spanish colonial troops, but also the armed civilians of the royalists who had been improvised by Governor Flores. They trembled. I can't even hold the gun in my hand. After a while, there seemed to be some voices in the distance, and some bold soldiers looked at it, and then shouted: "It's the Tang people, they have withdrawn from the trench, and they have actually retreated to the back." ”

The brainy shaft shouted: "The Tang people are afraid, let's chase it!" ”

Naturally, this idea could not be supported by anyone, and even at this moment no one dared to shoot at the retreating soldiers of the Don Army, because someone could see it clearly. The machine guns of the Tang army were still standing there, and whoever dared to show their heads would strafe them.

When the Don army had all retreated from the first line of trenches, a disturbing silence began. The Spaniards did not know why the Don troops withdrew from the trenches, perhaps with some attempts, but nothing happened for a long time. Just as the Spanish soldiers felt a little relieved and were ready to break the embarrassment and say something more, suddenly the cannon rang out again.

"Watch for secrecy!" The officer, who was so far away, shouted loudly. Several soldiers curled up almost instinctively, hugging themselves at the bottom of the trenches. Hold your head and minimize possible injury.

Then several Spanish soldiers heard a click, and something smashed into them, and they cowered in the trench.

Soldier A was startled, but he didn't hear the expected explosion, nor was he blown up, so he boldly looked back. I saw a cylindrical object in the trench. Like a big cup, the metal shell, a leaking sound came out, a burst of yellow gas wafted out of it, and in the blink of an eye, the entire trench became yellow and clear.

Soldier B also exclaimed, "What the hell is this?!" ”

It is rare to see any strange-colored gases. And when this yellow gas appears, it is accompanied by a strong and pungent smell, which makes people instinctively panic.

Plan 1050 is not taboo in the Tang Army, but it is also strictly controlled. From the very beginning of Datang Chemical Industry, it was capable of producing poison gas. In fact, it doesn't take anything complicated to make poison gas, and almost any chemical plant that can make fertilizer can produce poison gas. However, the Datang military is still very cautious about the use of poison gas. So far, the Tang army has not really used this weapon on any battlefield.

Datang has developed a variety of types of poison gases, the more common one is the current one - mustard gas. Its scientific name is dichlorodiethyl sulfide, which is an erosive poisonous gas, which has no specific effect after poisoning, and can pollute water sources for a long time and directly harm the human body through textiles. Mustard gas mainly invades the body through the skin or respiratory tract, and the incubation period is 2-12 hours. It directly damages tissue cells and has an erosive and stimulating effect on the skin and mucous membranes: skin burns, redness, swelling, blisters, ulcers; inflammation and necrosis of the mucous membranes of the respiratory tract, violent coughing and thick phlegm, and even obstruction of breathing; Conjunctivitis of the eye, which leads to redness, swelling and even blindness; There is also damage to the hematopoietic organs; It is often accompanied by secondary infection. Ingestion of mustard gas can cause vomiting and diarrhea. Because of its many uses and almost no solution, mustard gas is also known as the king of poison gases.

Several Spanish soldiers felt intense discomfort almost as soon as they came into contact with mustard gas. When the thick yellow gas is breathed into the respiratory tract by them, the mucous membrane of the respiratory tract is seriously damaged, and some people even have symptoms of suffocation. People whose skin comes into contact with poisonous gas feel that their skin is itchy and painful, and it is simply painful.

The itching caused the soldier to begin to scratch his skin in pain, and his nails scratched the skin, revealing blood-red marks and flesh inside. The pain made the Spanish soldiers scream horribly, and all those who came into contact with the poison gas were the same.

The cannon fire did not stop, and more gas shells were fired by the cannons into the Spanish trenches. Some fell into the trenches, some fell to the ground, but due to the high density, the overflowing poisonous gases would sink underneath and eventually be touched by the Spanish defenders.

Dozens of Tang artillery shells hit hundreds of poison gas shells into the ranks of the Spaniards, and these mustard gas shells were the vast majority of the poison gas shells brought by the Tang army this time.

At this time, all the Tang troops were far away, and even the front-line troops were issued with gas masks, Xu Daorun was also observing the position of the front line, the yellow fog seemed to cover the entire trench fortifications, he sighed slightly and said: "Wait, we will go up again when the mustard gas is almost gone." (To be continued.) )