Bright Sword starts with the grenade flat.

Chapter 165 The defensive power of cat ear holes
Liu Xiu saw Li Yunlong saluting him and quickly returned the salute. At this time, Li Yunlong looked at the more than 100 people who got off the more than 30 rotorcraft and said with some confusion:
"Didn't the higher-ups say they would support me? You just brought so many people here! I said it's not a bad idea that we, Lao Li, didn't bring you when we were in the independent group!"

At this time, Liu Xiu was not in the mood to chat with Li Yunlong here. Just when the rotorcraft was in the sky, Liu Xiu had already seen that the artillery positions on Chu Yunfei's side were already deployed.

If we don't do something here, it will be too late. When Liu Xiu was in the sky just now, he also saw the trench position that Li Yunlong had set up. To be honest, Li Yunlong's trench position was okay to deal with the charge of the little Japs who didn't have many heavy artillery. .

But now the heavy artillery in Chu Yunfei's hand was several times the firepower of the Japs. Liu Xiu couldn't even count the 150 mm heavy artillery.

Therefore, it is strange that Li Yunlong used such an ordinary trench to fool him and nothing happened.

It’s no wonder that after a battle, Li Yunlong’s team of tens of thousands was reduced to just over 3,000, with two-thirds of the casualties!
Therefore, Liu Xiu had to ask Li Yunlong and the two lions' soldiers to quickly turn ordinary trenches into cat-ear hole trenches before Chu Yunfei's heavy artillery bombardment arrived!

Because the resistance of this kind of cat-ear hole trench to powerful heavy artillery bombardment is dozens or even hundreds of times that of ordinary trenches!
Of course, this cat-ear hole first appeared on the battlefield to aid Korea. It was mainly used to deal with the heavy artillery and aircraft bombing of the US army.

In the early days of the war to aid Korea, the reinforcements mostly engaged in mobile warfare or encounter battles, and the fortifications they built were mainly field defenses. The characteristics of this kind of fortifications were that they could be constructed quickly and could be completed using terrain and simple materials. The disadvantage is that it cannot withstand heavy bombing. Often after a round of enemy artillery fire, all bunkers are destroyed, and the soldiers can only fight in the crater, and the concealment effect is extremely poor. Although anti-artillery fortifications were built based on soil and reinforced with wood, the fortifications were still destroyed and casualties occurred in the face of the enemy's powerful firepower.

By May 1st, the enemy launched two large-scale offensives in the summer and autumn. The weak defensive capabilities of the field fortifications of the reinforcements were highlighted, and they suffered heavy casualties under the attack of enemy artillery and aircraft. The reinforcements did not have enough heavy weapons to fight the enemy at that time, so the troops mobilized the wisdom of the masses and learned how to defend themselves against artillery fire. At first, the soldiers dug "cat's ear holes" in the traffic trenches. They dug single-person anti-artillery holes one meter wide, one meter deep and more than two meters at the top on the walls of the traffic trenches. After testing, a battalion's position can resist artillery fire by using cat's ear holes. A bombardment of two thousand to three thousand artillery shells.

However, the Maoer Hole was still unable to withstand the bombing of large-caliber artillery, so the soldiers continued to dig new bunkers. A squad of soldiers from the reinforcements were deep behind enemy lines. In order to resist artillery fire, they dug two cat-ear holes to form a horseshoe-shaped fortification. The further you dig into the mountain, the thicker the top becomes and the stronger its ability to withstand artillery fire. This method quickly spread.

The most prominent one was the use of horseshoe-shaped fortifications in one of the reinforcements' positions to withstand 20,000 artillery shells from the Yin Army, killing more than 700 enemies at the cost of 26 casualties. After summing up these experiences, it is required that the top of the tunnel is at least five meters thick so that there is no need to worry at all.

When Liu Xiu heard Li Yunlong's words, he walked towards the trench and responded:

"You also know that my new third regiment has become the air force, and I brought people here to teach you how to dig trenches. I just saw it in the sky. Chu Yunfei was full of heavy artillery. He must have They will carry out heavy artillery bombardment before attacking, and the trenches you dug here can't defend Chu Yunfei's heavy artillery at all, so I'm here to teach you how to dig trenches to resist heavy artillery!"

Li Yunlong asked:
"How to dig trenches that can withstand heavy artillery?"

Liu Xiu didn't talk nonsense about this. He immediately took the shovel carried by a soldier and started digging. Liu Xiu's physical strength was amazing. In less than ten minutes, he dug out a hole one meter wide and one meter high on the wall of the traffic trench. Meters, two meters deep cat ear holes diagonally downward!
After Liu Xiu finished digging, he said to Li Yunlong and the soldiers:

"If you see it, just dig like this, towards the wall of the trench in the direction of the enemy! Everyone takes turns to change people and try to dig enough cat holes in a short time!"

Li Yunlong on the side saw the cat's ear hole dug by Liu Xiu. Although it has not been tested in actual combat, just imagining it can be seen that such a simple cat's ear hole is very effective in avoiding shelling!
So he immediately ordered all the lions to start digging cat holes! So there were more than 10,000 lions in the whole group, and they began to dig cat holes on the walls of the trenches in squad units. Compared with digging trenches, the excavation of cat holes was relatively simple.

Liu Xiu felt relieved after seeing Li Yunlong listen to the advice. What he was most afraid of was that if Li Yunlong didn't listen to the advice, he would be in trouble!
After watching the soldiers sweating and digging cat holes, Liu Xiu also followed Li Yunlong back to his temporary lion command post.

Liu Xiu looked at the temporary commander's tent that had been built fairly well and was not too worried that it would be destroyed by a cannon!

After Li Yunlong entered his temporary lion commander, Commander Qin, he asked Liu Xiu:

"Is your kid here just to teach me how to dig trenches?"

When Liu Xiu heard this, he smiled and shook his head and said:
"Of course not! The main reason I came here this time is to capture Chu Yunfei alive from the eighty-nine lions opposite!"

After Li Yunlong supported Liu Xiu's words, his eyes widened and he said:
"Is it possible that you want me to disobey orders on the battlefield again? The order from above is for me to resist the attack of Chu Yunfei, the Eighty-nine Lions, and defend Zhaozhuang!"

Liu Xiu smiled and said:
"That's right! If we directly wipe out Chu Yunfei's Eighty-nine Lions, wouldn't that mean we have defended Zhaozhuang? So how can we say it is disobedience! The order you received is to defend Zhaozhuang. I didn’t tell you how to defend, if you take the initiative to attack and destroy the opponent, you are also defending Zhaozhuang!"

After Li Yunlong heard Liu Xiu's reasonable explanation, he thought about Liu Xiu's strange tactics when he was in his independent regiment, so he waved his hand and said:
"Okay! Okay! I know you have more clever ideas for fighting than me, so just fight how you say! I, the Second Lion, with more than 10,000 people, will listen to your arrangements!"

After Liu Xiu heard Li Yunlong's words, he also smiled and said:
"Then we have to wait and see how effective the anti-gunfire of this cat's ear hole is. If the effect is good, the casualties of the two lions will not be large, and we have the foundation to capture Chu Yunfei alive, right?"

Li Yunlong nodded to this, and then inspected the position with Liu Xiu. They were both very satisfied with the cat holes dug by the soldiers.

However, not even ten minutes after the soldiers dug the hole, Chu Yunfei's artillery position on the opposite side had already been set up and began bombarding.

Li Yunlong and Liu Xiu immediately hid in a cat-ear hole dug by the soldiers for safety.

(End of this chapter)