Qiu Xingxiang also nodded subconsciously when he heard this, the gap between the Chinese and Japanese armies was too big during the day, but at night, although there was still a gap, the Japanese army's artillery superiority was greatly weakened.

"You can do this, but how can our soldiers be resupplied? And how are each of the pit systems connected? We don't have that many radio stations.

If the tide of the battle changes, what will happen to the troops in the tunnels below the high ground that have been occupied by the Japanese? Qiu Xingxiang also realized the shortcomings of the tunnel operations proposed by Leng Jie.

It can be said that this tunnel operation, once adopted, is definitely a dead end for those soldiers.

"Supplies can only be stocked up in advance." Leng Jie replied, "As for the tunnels, the most you can keep in touch with is through observation posts and so on, as for the radio or telephone, it is definitely not possible." ”

"The way is a good way, but it's a little too cruel, and it's sending the soldiers to their deaths." Qiu Xingxiang shook his head.

"But in order to be able to hold the fortress of Fuchikou, what are the dead and wounded? The Battle of Songhu tells us a truth, casualties are nothing, if there are heavy casualties but cannot stop the Japanese attack, then the gains outweigh the losses.

If we can exchange casualties for defeating the Japanese army, the cost of several times is worth it, and we can consume it with the Japanese army. Leng Jie retorted.

"In fact, you can report this tactic to the division headquarters, if you can adopt it, you may be able to hold on to Fuchikou for a longer time." Qiu Xingxiang thought about it, and it seemed to be too.

Dead and wounded are really nothing to the Chinese army, as long as they die well.

If you die in vain, it is the saddest thing.

"I will improve the relevant plan, as for whether to adopt it, it's not up to me to decide, I hope it will be adopted!" Leng Jie was also a little unconfident.

Although he is not confident, he will still do this, if this tactic can be popularized, it will have a great effect in the future anti-Japanese war, which can reduce casualties and kill as many Japanese soldiers as possible.

Back in his unit's defense area, Leng Jie told a group of officers above the company commander about his plan for tunnel operations.

In addition to tunnel operations, there are also anti-slope tactics.

Tunnel warfare, coupled with anti-slope tactics, the combination of the two is more effective. In particular, their positions faced the Japanese naval guns on the river, and the anti-slope tactics could minimize the Japanese artillery superiority.

Regarding Leng Jie's tunnel defense operation, Wang Yanqing and Liu Xin did not object, but they just felt that there were problems such as the amount of work, supply, and contact.

"We don't know how long it will take for the Japanese to arrive, and we have at least two months or more to build these tunnels. We don't need to build too luxurious, we just need to dig simple tunnels and reinforce them with wood in weak places.

Before the Japanese attacked, we had to do something, just dig a tunnel. Leng Jie retorted.

"Regiment commander, your method is good, but don't we need to ask for the consent of the brigade headquarters or the division headquarters?" Wang Yanqing asked.

"They don't agree that we all have to do it, and that's the best defensive tactic I can think of at the moment. Do you have a better way? Leng Jie asked rhetorically.

"I can't think of it!" Liu Xin shook his head.

The battalion commanders and company commanders below shook their heads even more.

"Since there's no better way, let's do it my way." Leng Jie made a direct decision, "I have studied the terrain of our regimental defense area in the past two days. There are more than 20 large and small high grounds, all of which are certainly not suitable for digging tunnels, I took a look, and 11 of them are suitable for defense.

Of these 11 high ground suitable for defense, 3 high ground positions are critical and must be focused on defense; The other 8 highlands are used to support the defense of the 3 core highlands on the perimeter.

Three large tunnels and several small tunnels were to be dug in the three core highlands, while one or two large tunnels and several auxiliary small tunnels were to be dug in the remaining highlands, as well as a certain number of anti-artillery holes. ”

Hearing this amount of work, the people below were still a little shocked, and it would take a lot of time.

"Commander, how to solve the problem of drinking water?" Daniel Zhang asked.

"Find oil drums to store water. If there are not enough oil drums, use wooden barrels or jars to store water, and water and grain should be stored in a safe place in a large tunnel. And it should be stored separately to avoid being blown up by Japanese artillery fire or captured by the Japanese army, resulting in a lack of drinking water and food.

We want to make sure that we stay in these tunnels for at least a month, so food and water should be considered for more than a month. Leng Jie said.

"Can our people hold out that long? Especially in underground tunnels? Li Yu was a little worried.

In a closed environment, no one dares whether the soldiers can stay that long, after all, they have never tried.

"So we have to dig the tunnel in advance, and then conduct a drill so that everyone can have a process of adaptation.

As for how to pass the boring time in the underground tunnels, you can also think of some ways to summarize them when the time comes.

Although the time underground is boring, it is important to survive. Leng Jie explained.

Wang Yanqing nodded, "If you really encounter the attack of the Japanese army, land, sea and air, you really have to find a way to survive, and then talk about the counterattack."

There is merit in this tunnel operation, and my suggestion is to report it to the superiors, if it can be adopted by the Chikou and even the entire Tianjia Town fortress group, it may be effective.

We don't have to defend the entire fort group, with this method, we can hold it for a longer time. ”

"I've thought about it too, but it needs to be improved. When we build underground fortifications, we find out the possible problems and then come up with a complete plan, which is more convincing. "If this defensive tactic can be adopted, the defense of the entire fortress group can undoubtedly be greatly improved.

If the division can adopt it, it is best, if not, then it will be reported to the next level.

Anyway, the Central Army has this problem, and if it can reduce the casualties of the troops, it is not impossible to report to the higher levels.

After Wang Yanqing and Liu Xin were persuaded by Leng Jie, the other officers below had no objections, because most of these people followed Leng Jie to break out of Nanjing.

In their hearts, Leng Jie is already a god, and a kind of blind self-confidence has appeared.

If this is used well, it is a good thing; If you use it wrong, it's a bad thing.

Therefore, in the next few days, other units of the 18th Division discovered that the 108th Regiment was making great construction projects, and there was a great posture of digging up the hill in its defense area.

Some people are also laughing at Leng Jie, after all, Leng Jie, a junior who graduated from the Central Military Academy in the tenth term, is not a Whampoa student, except for the unproven combat exploits before, he is a young junior, and without an order from the division headquarters, he arranges defensive measures by himself.

It's not that everyone is laughing and watching the show, Qiu Xingxiang still brought Chen Wei and a group of battalion-level officers to watch and learn from experience.

Although they felt that this so-called tunnel defense had a lot of shortcomings, it sounded like it was working well.

Thinking of Leng Jie's previous results in the street battle in the defense of Nanjing, Qiu Xingxiang also knew that there was no mediocrity under the fame.