"If you want to reduce the weight of the horse cannon, you can also use an iron gun carriage, which is lighter and easier to carry than the bulky wooden gun carriage. We are already able to mass produce. Shang Wen said.

"Well, the cavalry pays attention to quick maneuvering, and this is very good."

"It's just that the size of the artillery can not be larger. It would be better to be able to produce a four-inch gun. Wang Jian proposed.

"That's fine." Shang Wen said.

"We are now using iron mold pouring, and as long as the inside of the iron mold is coated with coal ash, it can be poured repeatedly." Shang Wen said.

"Yes. Then the musket. How about cavalry equipped with muskets? Wang Jian asked.

"Muskets. I recommend using a short-barreled musket. After all, the cavalry still has to charge and kill. Shangwen proposed.

"Short-barreled muskets. Can we take a look at this musket? Wang Jian said. Compared to rifle models, short-barreled muskets are more suitable for cavalry needs. When Wang Jian inspected the musket regiment, he had already envisioned equipping muskets with cavalry units, but this kind of spear, which was close to human height with a bayonet, was not very suitable for cavalry. The main thing is reloading. Sprint. There are no problems with shooting. But reloading. The musket barrel was too long. If you use a bayonet in a sprint, it looks very weak. The main thing is that the Qin army was armed with three-edged bayonets. The use of infantry charges is not conducive to the rapid impact of cavalry.

"Now, we don't. We didn't produce this kind of weapon, we didn't even have drawings. Shang Wen shrugged and waved his hand.

"But we can produce new products very quickly." Shangwen added.

"Alright then, as soon as possible." Wang Jian said.

"By the way, General, this time, do you have any specific combat arrangements?" Shangwen asked. Only by knowing the demand can we better arrange production activities.

"We intend to attack from the west and fight all the way to the west bank of the Yellow River and the Hexi Corridor." Wang Jian said.

"Yes." Shang Wen nodded.

"Mr. Qin, let's leave first, with the new equipment, we'll come back to check." Wang Jian and Yang Duanhe said.

To the west, the Hexi Corridor. Shangwen began to have a large amount of terrain to the west. The terrain there is rougher. Mountainous terrain. The cavalry set off from there. What is Wang Qian's intentions. Why occupy there in the first place? Shang Wen is not very obvious about this attempt, mainly because he is not a military general, as for why he did it. Shang Wen didn't understand. But Shang Wen figured out another thing about morale, and that is. After entering the mountains to fight, a large number of engineers are needed. Especially across the Yellow River. Build fortifications, build bridges. Open the mountain, pave the road. Wait a minute. All need the help of a large number of engineers. The engineering corps is only a relatively vague concept in military academies. No one knows what they can do. I just know that they can open mountains and build roads.

"This." Yang Duanhe was curious about Shang Wen, who was stuck in silence. Why is this man so rude?

"Shh Wang Jian hurriedly stopped Yang Duanhe's words. Wang Jian knew that Shang Wen didn't know what he was thinking.

"Don't bother him, he's thinking about it, and if you bother him, the inspiration will be gone. Even the king did not dare to disturb him. Wang Jian said in a low voice.

"Oh." Yang Duanhe nodded lightly. For fear of disturbing Shang Wen's thoughts.

"General Wang. In this battle against the Yueshi, in my opinion, we must use engineering troops. Shang Wen stopped thinking and said.

"Engineers." Yang Duanhe shouted.

"Yes, our army is going to attack from the west. Except for the long Hexi corridor, which could march normally, the rest of the place was not conducive to cavalry attacks. I don't know General Wang's intentions. However, if you want to attack quickly, you must rely on the engineers to help the cavalry open mountains and build roads. Shang Wen said.

"Open mountains and build roads? It's not that easy. 10,000 people, how long can you build in a day. Not enough for a day's journey of the cavalry. Yang Duanhe said.

"Sir, you mean with explosives?" Wang Jian said.

"Yes. In addition, there is some engineering equipment that needs to be manufactured. to strengthen the speed of road construction. Shang Wen said.

"However, considering the needs of the road, I suggest that we start repairing it now." Shang Wen said. The construction of roads is not only to meet the needs of the march, but also to be a key link in the entire logistics. Throughout the history of China, the number of troops used for large-scale expeditions was very large. But for this reason, its logistical supply is also very large. However, the problem of logistical supply has always plagued this ancient capital, perhaps because of the lack of effective mobilization enthusiasm, no one has ever carried out a complete improvement of the road situation. As a result, every time a battle is fought, a large number of civilians must be requisitioned to carry out road repair projects. The quality of the roads is all dirt roads, barely able to march. When the battle is over. Basically scrapped. The road becomes a single-use product.

"Yes. I immediately went to the king about this matter. Wang Jian said with his hand.

"Mr. Qin, then we'll leave first." Saying that, Wang Jian and Yang Duanhe left. Yang Duanhe also asked Wang Jian from time to time. Because he doesn't know anything.

Now that it is late autumn, it is obviously impossible to build a road like the one to the north on a large scale. And the speed of time simply can't make you fix like that. To build, only simple roads can be built. Blowing up the road with explosives, then making an open road, leveling, which requires something like a roller to be compacted quickly. The next step is to lay the stones and then compact them. That's basically it. With these two processes, I'm afraid the war can't wait. The truth of the speed of the soldiers. Shang Wen still understood.

When the military academy was established, Shang Wen put forward such a proposal. It's no accident. The first engineering armies were formed during the Assyrian Empire. Assyria was able to dominate one side because of two major military reforms. The first is the military region system in the current military sense. The second is the engineer. With the Engineer Corps. The Assyrian Empire was able to go to war. And it is under this influence that Western countries attach great importance to the sappers. Rome, in particular, has given this attention to particular importance. Compared to the East. Only the Qin State had this rudimentary form of using sappers, but it did not form a standing army. In other dynasties, it is often easiest to ignore that only when wars are frequent, will soldiers be specially drawn to form temporary sappers. They were often quickly disbanded afterwards, and no specialized engineering corps was formed.

The significance of the engineer is not in his opening of mountains and building roads. Rather, it is a division of labor between the arms. The meaning behind the division of labor is to symbolize the independence and large-scale application of human architecture. Rather than being in a state of dependency all the time. Wandering in a variety of industries.