Qin Chengzu came over, and Lin Jian called Han Caizhi, Zhang Jiheng, and Zhang Gou in, and talked about the training of the military commander cadet team first. Chen Lei left in advance, and Sun Jingtang and Wang Chengfu wanted to stay to talk about other things, so they also sat next to him and did not avoid it.

"I know that many generals in the army were encouraged by the great victory in Haidong, and advocated an immediate military attack on Daishan, Changguo and other places controlled by the luxury family, everyone's enthusiasm is very high, this is a good phenomenon, we should not pour cold water," Lin Jian asked Han Caizhi, Zhang Jiheng, and Zhang Gou to sit close, "However, we should also see that at this time, it is already the end of April, and Huaidong and the East China Sea will soon enter the wind and rain season." With only one or two months to complete, it is difficult to complete the preparation for a campaign. Before autumn, a large-scale military operation against Daishan, Changguo and other places controlled by the luxury family is likely to be damaged by bad weather factors at any time, thus causing unnecessary losses, which is what we should try to avoid......"

Speaking of this, Lin Jian paused, took a sip of tea, and continued: "...... When you go back, you have to seriously discuss these issues with the cadet corps, you are trained as a middle and high-ranking general, and these are all questions that you should consider. ”

At present, the Huaidong Military Department has to concentrate more financial resources and repair the seawall, and it is very difficult to expand the army in the short term, but the training of middle and high-ranking generals cannot be interrupted.

Grass-roots military attachés, sentry generals, battalion generals, and higher-level generals who are no higher than those at the level of commanders and bannermen have higher and more complex requirements for tactics, strategy, army management, command operations, and even logistical supply and personnel coordination.

Lin Jian can't expect all the generals above the battalion post level to be the choice of the moment, and they have the talent of one in a million.

The purpose of Lin Lian's imitation of the military academy in later generations is to train grass-roots officers, select the best among them, systematically study and strengthen them, and train a number of qualified middle and senior officers, so as to ensure that the army's command system can be effectively maintained in the midst of rapid expansion.

However, some of the abilities and skills of middle and high-ranking generals can only be better mastered after a long period of practice in managing the army and operations, and they cannot be competed after a few months of intensive study.

At present, the Huaidong Military Division has a total of 40 battalions of combat strength, and the military posts at the battalion and post levels are basically full. In the absence of an expansion of the armed forces, the only way to meet the needs of training middle and high-ranking officers in the course of administering the army in practice can only be achieved through the creation of new military posts.

Commanders are only one of the new military positions.

When he was in Haidong, Lin Jian selected more than 20 military attaches from the Huaidong Army, appointed them as military commanders, and incorporated them into the Danluo Wang Army, specializing in daily training and operational command affairs, responsible for assisting the commander-in-chief.

The military commander is equivalent to the military positions of the combat staff officer and chief of staff of later generations, as well as the marching Sima and military personnel of the current generation.

It's just that marching horses and joining the military are only set up at or above the military department and camp level. In order to avoid confusion, there are military commanders at the brigade, battalion, and sentry levels. Unlike the adjutant generals, who comprehensively assist the commander-in-chief in handling various affairs, the military commander mainly assists the commander-in-chief in the affairs of organization and training and combat command. In the army, the rank of military commander is ranked after the adjutant general.

Lin Jian patiently explained his intention to add military commanders at all levels of the army to Han Caizhi, Zhang Jiheng, and Zhang Gou. When it was over, Lin Jian said to Han Caizhi again: "You go and call Zhu Ai in!" ”

Han Caizhi thought to herself: What are you calling Zhu Ai for? didn't talk much, and went directly to the side hall and Zhu Ai, who was still waiting for Wang Chengfu there, called in.

Zhu Ai is also puzzled:

Han Caizhi, Zhang Jiheng, and Zhang Gou have been ordered, and they are senior generals at the level of deputy brigade commanders, Qin Chengzu is the right Sima of the march, and he is tied with Fu Qinghe and Cao Ziang in the army, Sun Jingtang is the commander of the Gong Battalion, and Wang Chengfu is the inspector of the Dianshu Order and the Hecheng Inspection Division. They are all the core layer of the Huaidong Military Division. Lin Jian summoned them to discuss the secret matter inside, and called him a little tun chief to go in and do something?

Seeing Zhu Ai come in, Lin Jian asked him to come to the front, took out a stack of files from the desk and rummaged through them.

Zhu Ai could recognize that the stacks of files were all materials for the construction of the seawall, nearly a foot thick. Seeing that the envoy searched for a long time and didn't find what he was looking for, Zhu Ai only thought of asking about repairing the embankment, so he said: "What do you want to ask, my subordinates can remember the embankment!" ”

"I'm looking for the map of the Yandu County Seawall that you offered, I remember that it's in this pile of things, you come and help me find it." Lin Jian said.

However, Sun Jingtang recognized the logo and helped to turn it out.

Lin Jian spread out Huang Baba and a few patchwork maps of Yandu County defending the seawall on the desk, and said to Zhu Ai: "Your map of defending the seawall does not use the current map of Yandu County, and there are several revisions. The existing map of Yandu County was drawn a hundred years ago, and the terrain of Yandu has changed greatly in the past 100 years, and the estuary of Qingjiangpu alone is narrowed by one-third. The old worker sent someone to test it on the spot, and focused on checking a few places, and found that your picture is quite consistent with the field, which is much more accurate than the old picture. Did you draw it yourself? ”

"The lowly job makes a living by herding cattle, and he has nothing to do, but his footprints are all over the corners of Yandu County," Zhu Ai said, "This picture is indeed painted by the lowly job himself." ”

"Which one are you learning from geodesy?" Lin Jian asked.

The drawing of accurate maps is not obtained by experience, and Zhu Ai can draw a map of Yandu County, which is naturally because he has learned the geodesy of his predecessors.

"Pei's Cartography Six-Body and Zhao's Bird Flying Method." Zhu Ai replied.

Lin Jian nodded, and motioned for Zhu Ai to continue, to find out whether he had a thorough study of these two methods.

The cartographic surveying and mapping of the world was mainly inherited from the six cartographic methods of the Northern and Southern Dynasties. The bird flying method is the development of cartography by Zhao Mingzhang, the secretary of the Ministry of Industry in the previous dynasty, which sounds extremely profound, but it is actually a method of measuring the distance between two places in a straight line. Since the bird flight method, the map mapping has become more accurate in terms of mileage and relative position.

Limited by the traditional perception of "the sky is round and the place is round" for thousands of years, astrometry, which can accurately determine latitude, is excluded from the traditional surveying and mapping technology because it will lead to the inference of the "round earth theory".

Even in navigation, as a kind of astrology, weft and star measurement is regarded as an evil method, and even rejected by miscellaneous science; Before Lin Bin, only a very small number of maritime merchants used it secretly.

Even fewer people recognize astrometry as a key technology for the development of isolatitude direct shipping routes. For example, the sea ships from Jin'an and Meishu Prefecture to Kagoshima mainly relied on the experience of the Black Water Current to sail to the sea. Because the sea route of the southern route is very fixed, it provides great convenience for the Haidong Battalion to send warships to intercept the maritime merchants of Zhejiang and Fujian.

Zhu Ai only knew the six methods of cartography and the method of bird flying, so he stood in front of the bookcase and explained in detail. Only Lin Lian, Qin Chengzu, and Wang Chengfu knew these two methods, Han Caizhi, Zhang Gou, and Zhang Jiheng didn't understand it at all, and Sun Jingtang was also confused.

After Zhu Ai finished speaking, Lin Jian said to Qin Chengzu: "The military commander cadet team has been training for three months, which is not a long time. Tactical learning is based on geoscience, and geodesy is precisely its foundation. I think Zhu Ai can spare a month to help you teach the following generals how to study geometry. ”

Qin Chengzu nodded and said, "That's the best. The military commander assists the commander-in-chief, and he doesn't know geodeticism, so it's a little unreasonable. But if 12 out of 10 people can master this method, I'm thankful. ”

Zhang Jiheng was puzzled in his heart, he was straightforward, and he didn't hide any doubts in his stomach, so he stood at the bottom of the hall and asked: "The generals can understand the topographic map, what else do you want to learn geodesy?" ”

"The topographic map is a requirement of the first level of the capital chief, you are really not motivated," Lin Jian said with a smile, "The largest topographic map of the imperial court has been more than a hundred years ago. In the past hundred years, the vicissitudes of the sea, the river meanders have been diverted, and the route has changed, and I don't know how many. It is the map of Hailing Mansion, we have spent a lot of energy to check, there are many errors, how many topographic maps of the world can be fully trusted? ”

"......" Zhang Jiheng scratched his brain and said, "The map is not accurate, and finding a local person as a guide can always make up for it." ”

Lin Jian shook his head and said, "It's far from that simple. Topographical miscellaneous, including geodesy, has a great deal to do with the use of troops. It is very simple to arrange troops on the flat terrain, and you can pick a sentry general and battalion officer at will, and you can tell the whole way. But when we engage the enemy, it is mostly in a complex terrain environment. Combining the terrain with the military formation, integrating the river meandering mountains and the short and narrow distance, into the military formation, is the way to get started for famous generals. At this point, you will find that the existing topographic maps are too rudimentary, and the guide cannot have much military knowledge. As the main general, you have to explain the terrain of the scouts on the ground, the formations of the troops and the attack steps of each unit to your subordinates, how can you explain it clearly and without mistakes or omissions? The so-called 'knowing astronomy and geography' is not such a simple thing...... If you can't learn, you can still give me an obedient return to the Chinese army to continue the camp. ”

Zhang Jiheng's face was surprised, but he didn't say anything more.

Zhang Gou reflected a lot during this time, knowing how big the span from battalion general to town general (brigade commander) is, battalion generals can also lead troops with martial arts, and they can be competent if they know some simple tactical principles, and town generals usually have to master thousands or even tens of thousands of soldiers and horses, and it is impossible to take into account the whole army with only military bravery.

Lin Jian saw that Zhang Jiheng was still unconvinced, and said with a smile: "Let me give you the most basic example: In the spring of last year, Liu An'er surrounded Xuzhou City, dug the embankment of Yanshan Mountain, and flooded Xuzhou. If Yue Lengqiu had been able to pile up the weir altimetry method and measure the elevation difference between the Yanshui embankment and Xuzhou City in advance, he would not have been defenseless at all. As long as Yue Lengqiu sends troops to defend Broken Dragon Gang in the northwest of Xuzhou City, and simply builds a diversion dam between Broken Dragon Gang and Xuzhou City, he won't have to be so embarrassed in the later stage," Lin Jian asked Zhang Gou sideways at this time, "Speaking of which, I want to ask you: among the Huaisi generals, which one can do geodesy?" Otherwise, it would not have been possible to dig the Surabaya embankment from Yanshan and lead Surabaya to Xuzhou City. ”

Zhang Gou said: "The old handsome Yang Quan learned, Yang Quan died in the Hezhong Mansion, and only An Shuai and the girl in the red jacket were passed on." An Shuai is also dead now, and only the woman in the red jacket knows this secret technique. The last general doesn't know if the girl in the red jacket has been passed on to others! ”

"The soldiers regard geodesy as a secret technique, but it is actually just a branch of miscellaneous craftsmanship, and the old engineer Ge Fu is the most proficient," Lin Jian didn't mind that Zhang Gou had respect for Liu An'er between his words, and smiled with Zhang Gou, "You have to have a heart, Zhu Ai will teach you the six methods of Pei's cartography and the bird flying method, and the right Sima will teach you the star measurement method, the art of looking at mountains and waters, and the method of stacking rice to show the shape, and the height measurement of the weir is just a small technique in looking at the mountains and water." You have learned these things, and you are more complete than the secret geodesic techniques that are not passed on by soldiers! ”

"I will thank you." Zhang Gou was very indifferent to the generals of the Huaidong Military Division, but when he heard that the secret skills of the old marshal Yang Quan and An Shuai were so sparse and ordinary in the eyes of Lin Lian, Qin Chengzu and others, he was still shocked in his heart.

Thinking about it carefully, he first obtained the treasure of the Mabu Army Drill Code, the Huaidong Army can be popularized to the level of the commander, and the Huaidong Military Division will use the secret technique of military geodesy as the entry threshold for middle and senior generals, which is really not so strange.

Lin Jian saw that Zhu Ai heard that there were other geodesy techniques handed down in addition to the Six Methods of Cartography and the Bird Flying Method, and showed a look of great interest, so he took out a thin booklet from the desk, handed it to him, and said: "You can teach yourself the Six Methods of Cartography and the Bird Flying Method, and after reading this book, you should be able to deduce other geodesy methods, and it also happens to share some pressure for the right Sima." The old worker's "Supplement to the Scriptures" is almost complete, and Zhao Shuhan's "Craftsman's Scripture" is only half compiled, so I will have someone send you a copy of the existing version another day! In addition, books such as "Boat Dictionary" and "Iron Metallurgy" are all top-secret materials of the military department, if you have the opportunity, you can borrow them when you go to Chongcheng, but you can't bring them out. ”

"Thank you, sir!" Zhu Aixi couldn't help but kowtow and thank you.

"Get up and speak, you have to talk on your knees, I have to stretch my head to see you, it's very troublesome." Lin Jian said with a smile.

Jiang Yue, Lin Jian didn't see it; Lin Jian recognized those who had amazing talents in the world, Ge Fu, an old engineer who was not very literate, Zhao Shuhan, who was depressed, and Li Zhuo, who was unable to do his best to control the political enemies of the DPRK and China.

In addition, Fu Qinghe, Qin Chengzu, Cao Ziang, Ning Zechen, Ao Canghai, Wang Chengfu, Ge Siyu, Sun Shangwang and others are all extremely talented, and Zhu Ai must at least be classified into this category of people.

Liu Tingzhou was unable to promote him as an official because of half of Zhu Ai's face in his early years, which can be said to be a pity; For Huaidong, it is not a blessing to be unpaid.

In comparison, Lin Mengde, Sun Jingxuan, Sun Jingtang, Hu Zhiyong and others are also promiscuous/personnel for half a lifetime, knowing the worldly and pragmatic, so they can surpass ordinary people and become the characters of choice for a while. Zhou Pu, Zhou Tong, Zhao Hu, Lin Jingzhong, Zhao Qingshan, Ge Cunxiong, Ge Cunxin, Wu Qi, Li Shuyi, Sun Dalu and others have expertise in fixed fields that others can't match, and they are also outstanding beyond ordinary people.

Lin Lian tried his best to arrange all the talents he knew and used for him to the appropriate positions. It's just that Zhu Ai has just joined Huaidong for half a year, although he is talented, but his actual experience in the world is still insufficient, and Lin Lian doesn't want to pull out the seedlings too much, so he wants to go through it from the grassroots level first.

Thinking that he came to this world, nearly four years, although he had the memories and experiences of his previous life, but in the process of advocating miscellaneous craftsmanship, Lin Jian knew that he had the greatest benefit. Only by combining the experience of the previous life with the insight beyond the time and the miscellaneous craftsmanship of the current world can we have the confidence to be truly calm and unhurried.

Lin Jian was governing the army at this time, and he was just integrating these into it. He hoped that a group of outstanding and famous generals would emerge from the Huaidong Military Division to teach the art of governing the army, and naturally there would be no reservations.