Regarding why the Song Shuijun frequently lost in the battle with the Yuan Shuijun, there were many discussions among military fans in previous lives. Some people say that it was because of the help of the Song rebel general Liu Quan that the Yuan army was able to train a strong naval army; Some people also say that it was because of the gap in the quality of the warships and soldiers of the two armies that caused the Song Navy to be defeated; Some people also believe that it was the corruption and treacherous power of the Song army that caused the large-scale defection of the generals of the navy, which in turn led to the decline of the strength of the navy...... Lin Lin always said a lot, and he couldn't argue about his own words.

Zhao Hao thought that there were all these reasons, and they could all be the reasons for the defeat of the battle, but they were not the main reasons, but he couldn't say why. At this time, he found that a netizen said very insightfully, he thought that the main reason for the defeat of the Song army to the Yuan army in the water war was the strategic and tactical failure.

After the founding of the Great Song Dynasty, except for the two dynasties of Taizu and Taizong, which were aggressive and strategically offensive, although the other dynasties had battles to expand their borders, they generally adopted passive and passive simple defense in terms of strategy and tactics, and even more so after the loss of the Central Plains. In ancient times, the navy was not the main force of the conquest, but the auxiliary arm of the infantry cavalry, so its strategy and tactics were also affected, and the same is true.

However, the navy is a mobile branch of the army, which is used for attack, is the most effective, and has a similar function to cavalry. However, the Song army failed to use the superior naval army as a tool for strategic attack. It is mainly used as a means of defense for waterway assistance and rescue of dangerous cities. During the siege of Xiangfan, the famous Confucian Jin Luxiang once wrote to the imperial court, suggesting that heavy troops be sent to smash the thistle to contain the Xiangfan and Mongolian army. This bold attack strategy, with the sailors as the main force, was obviously not adopted. The Song Dynasty sent several naval forces to the north for surprise attacks, but the scale was too small to be effective.

At the tactical level, the Song fleet mostly resorted to passive defense in large-scale water battles. For example, in the Battle of Jiaoshan, every ten Song ships were in a boat, running through iron cables, and sank in the river. In the battle of Yashan, the Song side also tied more than 1,000 huge ships, the middle ship was outside, through the big rope, and the surrounding buildings were like city walls. This kind of passive defense, which uses ships as castles, completely ignores the characteristics of naval mobility, and is not only passively beaten, but also destroyed by fire.

Contrary to the Song army, Meng Yuan was born in a nomadic people, mainly cavalry combat, and Genghis Khan gave full play to the mobility of cavalry, and the use of mobile tactics such as running thousands of miles and interspersing detours was very skillful from top to bottom. In the early days, due to their weak strength, they were only used as auxiliary attacks. However, in the stage of the Yangtze River Campaign, the naval army has become the main attacking branch. Meng Yuanduo used the naval army as a tool for attack, and flexibly used frontal attacks, flank and back roundabouts, and coordinated flanking attacks by land and water, and bravely attacked to break the enemy's main force.

It was precisely because of the different tactics that the Song Navy relied on big ships. Although the big ship is powerful, it lacks maneuverability and relies entirely on wind power to operate, and if there is no wind, it is passive. In the Battle of Jiaoshan, the Song ship was beaten due to the lack of wind. The Mongol navy, on the other hand, was good at using light boats such as water sentry horses and Batu warships, taking advantage of their attacks and harassing them in turn, causing the Song army to take care of one and lose the other. The Song army's defense line was broken through only one place, and the Yuan army took the opportunity to break in, often causing the Song army to collapse on all fronts.

And Liu Shen, the commander of the Yuan army who pursued the Song army this time, is indeed not easy to mess with, he is not only good at land warfare, but also proficient in water warfare. He was the left deputy marshal of the Mongolian Han army general who conquered the south and destroyed the Song Dynasty. Since leading the troops to conquer Jinan Li Pu, wave the army to encircle Xiang, Fan and Baizhang, Lumen two mountains, the first to take Xiang, Fan two cities, and to the boat division to defeat the enemy in the jar beach, with the merit of the promotion of thousands of households of the general of Wuluo. Later, when he was ordered to defend Lumen Mountain, he repeatedly sent reinforcements from Song.

After the Yuan army attacked the Song Dynasty, Liu Shen participated in the battle of Shayang Ferry, and added general Wuyi with merit; The battle of Jiaoshan was promoted to the general of the Ten Thousand Households Peijin Tiger Talisman Protector; Reverted to General Zhaoyong; Yu Hezhou promoted Daru Huachi, translated to mean as the chief, the official of the palm seal has real power, according to the official system of the Yuan Dynasty, the Han people were not allowed to hold this official position, and it was because of his outstanding merits that he made an exception to let him hold this official position. And the commander of the Song army in the Battle of Jiaoshan was Zhang Shijie, and that battle can be said to have made him unable to defeat the army and was terrified.

Zhao Yu 'designed' the turtle boat, and naturally knew that this kind of boat had many advantages, but the disadvantages were equally prominent. When the battlefield is a preset battlefield and the combat mode is ambush or sneak attack, this kind of ship can only play a very big role. The turtle boat shined in the battle of Luliang in the Ming Dynasty, and in the final battle, once the turtle boat attack lost its suddenness, it was easy to fall into the encirclement of the melee. Although its sturdy hull would prevent it from being sunk, its role in naval warfare would not be played.

To put it simply, the turtle ship was actually similar to the French cuirassier heavy cavalry in land warfare, and could play a greater role in the plains that were conducive to charging. And once you get into a scuffle, there is no sprint distance, then you basically become a live target. In the case of tailwind, large sailing warships can basically reach a speed of more than eight knots, on the one hand, the turtle ship no longer has a speed advantage, and the distance also makes the turtle ship unable to use the ramming angle to attack, so it is very important to seize the advantageous battle position. Therefore, when Chen Renweng proposed to use the surprise attack method, Zhao Yu was naturally very interested and wanted to hear his plan......

There is an island in the ocean of Qizhou, called Qizhou Island, sixty miles away from the coast, it is possible to borrow the island to hide troops to set up an ambush, let the imperial fleet pass, and wait for the enemy fleet to suddenly kill when the enemy fleet arrives, so as to collect the effect of surprise attack. During the war, each ship was formed in pairs, cooperated with each other, fought along the outer edge of the enemy fleet, used ballistas to shoot the enemy soldiers on the ship, and then rammed the enemy ship at the angle of attack, so as to force the enemy ship to turn back and fight again through continuous fighting, so as to achieve the goal of rescuing the imperial fleet. And don't go deep into the enemy line to avoid getting caught in the melee and being trapped by the enemy. After the arrival of the naval division of our army's brigade, they annihilated the enemy in one fell swoop.

Zhao Yu also did not organize a specific battle, but felt that Chen Renweng's plan was feasible. But he thought it would be better to attack the tail of the enemy, so that he could take advantage of the wind; Second, if the enemy's rear army is attacked, it will inevitably cause panic, and it will be very difficult for them to turn around and face the battle, and it is inevitable that they will squeeze and collide with each other in the panic. And when they turn the ship, they become headwinds, thus losing their speed advantage, maneuvering difficult, and becoming a live target for them to hit. In addition, the ballista can be used to destroy the mast sails of enemy ships, de-powering enemy ships, and trapping them in the sea.

Time is urgent, there is no time to discuss in detail, after the supply is completed, the Destroying Front Army will all be dispatched in the direction of Qizhouyang, except for the remaining personnel...... (To be continued.) )