Since Zhao Yu established his own power, the only siege battle was the attack on the city of Guangzhou, although it was victorious, but it could not be compared with the attack on Quanzhou. Pen? Interesting? Pavilion wWw. ｂiquge。 info first attacked Guangzhou completely by using sneak attack tactics, and first killed the most powerful Tanma Red Army with lightning speed, which greatly reduced the strength of the enemy army defending the city; Moreover, the city of Guangzhou has been almost demolished by the Mongols, but the city of Quanzhou is intact; The three Liang Xiongfei are not strong in their will to fight, and they are not ready to live and die with the city, while Pu Shougeng's miser is different, he even dares to kill the emperor for money, so he will definitely fight to the death.

The experience of playing Guangzhou cannot be learned, and there are only a few cards in his hand, but Zhao Hao wants to win the grand prize of the century It seems that he can't do it without playing some means, he wonders how to play this grandson? Compared with the Yuan army, he has an advantage in the navy army and more advanced weapons; The advantages of the Yuan army were the rapid mobility of the cavalry, the strong field combat ability and the strong city defense of Quanzhou. All three were enough for him to drink a pot.

Zhao Yu calculated, the mobility of the Yuan army depended on horses, and his own mobility depended on boats. If your own boat can't outrun the horse faster than the speed, it's not all out of chance. The story of the tortoise and rabbit race, he has heard it countless times since he was in kindergarten, and the rabbit runs really fast in a short period of time, but the tortoise is resilient, slow but better than persevering.

According to the current marching speed of the army, it is generally limited to 30 miles a day, and you have to set up camp and rest when you walk enough miles, and the rapid march will not exceed 60 miles a day, but it will not last for a few days. Of course, the simple cavalry will be faster, but don't believe in the nonsense of 'traveling thousands of miles in a day, traveling eight hundred miles in a night', it is generally good to be able to run a hundred miles a day, if you march continuously at this speed, it will not take a few days to leave a dead horse, so you have to walk and rest to maintain your mobility.

A big ship powered by the wind can travel an average of 25 miles in an hour and 15 miles in the case of a headwind, so it can go at least 200 miles in a day and a night, so it is much faster than a horse. And the boat does not have to stop like a horse to drink, eat, and sleep, as long as there is water and wind, it can go without sleep. Therefore, on a long-distance run, the ship is completely superior to the warhorse.

Zhao Yu calculated that Zhangzhou and Quanzhou were nearly three hundred miles apart, and it would take three days for the cavalry to complete the instigation, while his own fleet could only complete it in one day. If his whole army feinted to attack Zhangzhou, he instigated the capital to come to the aid in the starry night after receiving the letter, and arrived three days later after a smooth journey, but he suddenly withdrew his troops to Quanzhou with a false shot. In this way, he rushed to Quanzhou in one day, but even if he turned around and returned to help after the instigation of a long march, it would take five days to fight for four days under the lack of people and horses, and he could win four days of siege time.

In this era, there are two main ways to storm a city and open a breach of the wall. One is the use of battering rams under the cover of mobile corridors; The second is to dig the underground tunnel all the way to the bottom of the city wall, and then destroy the tunnel to make the city wall collapse. Once the breach is opened, then cross it to launch a siege assault. Sometimes the besieging forces also carried out siege assaults without a breach. They climbed the ramparts of the city walls by moving towers or ladders, or by lifting gondolas, or by using both. Sometimes, an advance party was secretly sent to the city through tunnels, and then the gates were opened, or the defenders were attacked inside, so as to break the city.

However, it is not easy to break through Quanzhou City in these two ways, and it is often a protracted war of attrition, which cannot be completed in a short time. If you want to use a strong attack to open a breakthrough, you need to fight repeatedly to be effective, but it is not easy to open one, let alone three times; And digging tunnels in Quanzhou basically do not need to ponder, there are close to the sea, there are many rivers, and the city is surrounded by moats, can not dig how deep will be out of the water, the result of the tunnel can not be dug not to say, maybe you have to drown.

To sum up, Zhao Yu felt that even with the help of ballistas, it was impossible to complete everything in four days, and not only might they come back, but the reinforcements from other places would definitely be about the same, and they would not be able to besiege the city by themselves, but would be in danger of being surrounded by the enemy. Then it is necessary to arrange reinforcements, but the field battle is not the strength of the Song army, which needs to consume a large number of troops, thereby weakening its own siege force, making things seem to have entered a dead end again......

"Defense is a more effective form of warfare!" Zhao Hao pondered for a long time, and suddenly had a flash of inspiration, and thought of a basic combat principle summarized by Clausewitz, which is usually regarded as a combat principle for saving troops.

From this, Zhao Hao thought that since he couldn't break the city in a short period of time, and he couldn't afford to play the game of besieging the city for the time being, why not build a wall to block the enemy army from rescuing, and then he could give full play to the advantage of the Song army's good defense. Four days of siege can not be captured, but it should be enough to build a defensive line, and field fortifications are like "multipliers", it does not use many people, and it is quite useful.

Zhao Yu figured all this, and began to recall the relevant examples he could think of. It's really good, it really reminds him of a person, but it is not Chinese, but the Caesar of ancient Rome, who, like 'himself', is a typical ancient Roman general with strict thinking logic and outstanding organizational skills, and he has created a set of systematic siege methods. Of course, in different siege operations, the erection and operation of siege machinery and the specific steps of the operation are different, and they should be determined according to the environmental conditions at that time and the combat operations of the defending troops.

However, there is one thing to follow, and that is to first establish a protective barrier around the perimeter of the siege position, so that the isolated siege bunkers are connected by a siege fortification, thus forming a complete encirclement of the defending forces. At the same time, a barrier facing the outside of the city was to be built to deal with the attacks and attacks of reinforcements from the defending troops. Caesar, on the other hand, built this double defensive wall in almost every siege battle, using it to expand his forward positions and using it as a base for mobile field forces to carry out combat maneuvers.

Zhao Yu thought that Caesar was definitely not as famous as himself, most of them relied on Meng and blow, and attacking jade with stones from other mountains has always been his own trick, so what does it matter if he uses it again this time...... (To be continued.) )