Retreating before the battle is a very dangerous thing, and it tests the wisdom of the commander and the strength of the army. If it is not done well, the retreat will turn into a rout, or a rout.

With a large number of injuries and nearly 10,000 auxiliary soldiers, Daniel Zhang can't get up fast if he wants to, not to mention that there is still a line of national security dragging his feet. Even so, Daniel Zhang made as careful and meticulous arrangements as possible. The division of troops continued to retreat, and a camp of thirty miles was almost a day's journey, so that the retreat road was no longer without danger to defend. The troops responsible for the broken rear continued to hold on to the village, constantly retreating backwards, and could be sheltered and received by the next camp.

Now in the camp in Gudong, there are 2,000 officers and soldiers of the Green Battalion and 1,000 auxiliary soldiers led by Hu Xiance, and 1,000 of the 2,000 soldiers are cavalry. After Daniel Zhang retreated, Line Guoan was furious, but there was nothing to do, just as Daniel Zhang estimated, he did not dare to retreat from Longling alone. But the time was delayed by the line Guoan, and he waited for the cavalry troops who went to the direction of Longling to investigate to come back before leading the army to retreat, which gave the Ming army time to go out for a decisive battle.

Of course, Line Guoan is not stupid, he knew that the troops were related to the safety of the army after the road was broken, so he also left a thousand cavalry in the camp. In this way, there are 3,000 Qing troops in the Gudong camp, and these 3,000 Qing troops plan to abandon the camp and withdraw after dawn tomorrow.

Daniel Zhang and Line Guoan basically decided the strength of the rear according to the number of cavalry of the current Ming army, whether it was defending the camp, fighting in formation, or alternately covering the retreat, these 3,000 Qing troops were enough to protect themselves against the 2,000 Ming troops.

However, neither Daniel Zhang nor Line Guoan expected that the Ming army would come as soon as they said it, and it was only a day of delay that made it very difficult for their retreat plan to be realized.

…………

A march of seventy miles in one day. In Zhu Yongxing's opinion, this is not an unusual thing, but in the eyes of most Ming army generals, it is a very surprising speed.

It's just a day, and there's very little baggage. But looking at the state of the army, if you want to maintain this speed, I am afraid that it will collapse in two days. Zhu Yongxing was incredibly disgusted, and couldn't help but feel incredible that the Red Army could travel hundreds of miles a day and often march continuously.

And Bai Wenxuan was informed in advance, and Tengchong's cavalry and baggage team arrived first, and had already set up camp for the army, so that the soldiers could rest as soon as possible.

“…… After camping, first burn your feet, and pick up your feet in time after soaking them; Small needles and hair are worn on the side, and the skin must not be cut off......"

The simple and easy-to-understand marching song has been implemented throughout the army, especially officers, who must be able to do so, and this is the necessary assessment standard required by Zhu Yongxing. You must know that this is the secret of the Red Army's training of "iron feet".

Eating, scalding feet, drying shoes and socks, the soldiers stepped up to rest. Zhu Yongxing still has to arrange battles with the generals, of course, he is riding a horse to hurry, which is much easier than the infantry.

"Most of the Qing army has withdrawn from the Gudong camp, leaving only a few thousand defenders." Bai Wenxuan reported to Zhu Yongxing based on the information he had investigated in the past few days, "And from the analysis of the signs, these thousands of defenders will soon start to retreat." When the enemy retreats, our troops can take advantage of the situation and pursue them. ”

Zhu Yongxing pondered for a moment, Bai Wenxuan's proposal was a safe method, but it would give the Qing army more time to retreat. The dispatch of the army is already late, and if we wait any longer, I am afraid that the results of the battle will be limited. It's just that it's raining again this day, and I don't know when the road will stop.

"Our army has an advantage in strength, should we directly attack the enemy camp, and then quickly pursue the Qing army that retreats first." Mabao came up with a relatively aggressive strategy and seemed to be in a hurry to go to war.

Zhu Yongxing tapped his fingers on the table a few times, and no one knew that he was knocking out the rhythm of a rock song, but everyone closed their mouths and turned their eyes to Zhu Yongxing.

"If the rain stops, then the whole army will go out and attack the enemy camp directly." Zhu Yongxing made a categorical decision, "If it rains all the time, then build a tent, or follow King Zhao's wishes, chase and kill the enemy when they retreat." ”

"Your Highness, how you act has anything to do with whether it rains or not?" Bai Wenxuan was a little surprised, he had already forced back the Qing army, and it would not be an exaggeration to say that it was a victory, so he wanted to preserve more strength and was more opposed to attacking the camp and fighting.

"Of course it does." Zhu Yongxing smiled mysteriously and said, "Don't talk about it now, let me sell a small pass." But—" his face suddenly became serious, "as soon as the rain stops, the armies must be put in order in half an hour." As for the arrangement of the attack, it must also be decided now, so as not to delay time. ”

Although I don't know what secret methods Zhu Yongxing has, he is firm and confident, so Bai Wenxuan and the others will not continue to ask questions. Moreover, Zhu Yongxing also took care of two opinions, but the final decisive factor was God's arrangement.

The combat operation was decided, and Zhu Yongxing asked Bai Wenxuan to send cavalry to protect him and Qian Bangchen to observe the Qing army camp. The Qing army had decided to retreat and did not leave the camp at all, but the surveillance and defense were still tight. It's just that Zhu Yongxing and Qian Bangchen did not look for the weakness of the camp, but carefully measured the distance, surveyed the terrain, and chose a position that was relatively safe and could hit the Qing army.

"Outside the gate of the wall, line up two rows of cavalry, make a posture of attacking the enemy's village, the artillery mount is behind the cavalry, wait for the Qing army to gather, the cavalry on both sides of the division, and then open artillery bombardment." Zhu Yongxing estimated the distance again, pointed to his feet and said to Qian Bangchen: "The distance of more than 200 meters, well, that is, more than 600 feet." The cannon used a forty-five-degree angle and ten pounds of gunpowder bullets. What do you think? By the way, dig a shallow trench again, this thing is dangerous, light a fire and hide in the trench. ”

The little things in Qian Bangchen's stomach were all taught by Zhu Yongxing, including the eye-beating method for ranging, what is a 45-degree angle, and so on. Moreover, there are only two experimental data on the "Sky Bombardment", both of which are from one angle, but the weight of the gunpowder shell is divided into five catties and ten catties. Therefore, he memorized it very well, and when he recalled it, he nodded again and again.

"When there is enough time, we will do more experiments and record all kinds of data as teaching materials for training artillery." Zhu Yongxing sighed in his heart, it was not easy to find literate people in the Ming army, let alone those who were proficient in mathematics. You can only use this stupid method, make a table, and then memorize it by rote.

The principle of the "Sky Cannon" is very simple, and it was made very early, but Zhu Yongxing did not act in a hurry, but urged and guided the craftsmen to make a lot of improvements.

For example, in order to reduce air resistance, the gunpowder bag is bundled into the shape of a pointed cannonball; To increase airtightness, round hardwood planks were tied to the bottom of the powder pack to fit the barrel; In order to stabilize the flight, four more wooden tails were added to the "cannonball"; The fuse is also built into the shell to reduce the possibility of hitting and extinguishing the fire; The 40-centimeter barrel hand-made by blacksmiths was lengthened and hooped to make the cannon stronger and the trajectory of the "cannonball" more stable......