As for the so-called infantry and artillery coordination, Jing Wen also roughly understands it. If you want infantry and artillery coordination, you must determine a "c" time. The so-called "c" time is the time when the infantry takes over the first line position. In other words, it is the time for the infantry to rush to the enemy in the forward position. When the infantry charges, the artillery must start artillery preparations to suppress the enemy's firepower. Of course, the Goguryeo people did not have artillery at this time, so the pressure on the artillery was greatly reduced. All they had to do was drive those artillery soldiers off the tower. After the artillery preparations were completed, the infantry began to charge until they occupied the tower. Once the infantry charge is occupied, the artillery can gradually extend back to attack the enemy's effective forces and prevent the enemy's effective forces from resisting. The robbery of the city tower this time is actually similar to the beach landing, but the method is much simpler than the beach landing. The first group of death squads must be sent to the top of the city tower and then guard the city tower, so that the second group of troops can gradually rush up and strengthen the guarding force. After about three hours of training, everyone finally mastered the so-called "c", allowing them to fight relatively perfectly. "You remember, the first batch of infantry led by Dugu Mou must occupy the city tower when the hourglass is finished, and the artillery must also rush to the city tower when they are close to the city wall, that is, there is still one third of the hourglass. When the fire is extended, everyone should not have any accidents. If there is an accident, it will probably accidentally hurt one of our own people." Jing Wen said. "Yes!" Dugu Mou and Zhou Bin said. Soon, both sides began to prepare for the first actual battle of infantry and artillery coordination. This actual battle is very risky, and they have no experience before, so they don't know whether they can succeed. The control of time by infantry and artillery coordination must be very precise, but in later generations there were precise clocks such as watches that could calculate time, but there was nothing so precise in this time and space. So Jingwen finally found an hourglass, which he could use to calculate time. According to the previous plan, after the hourglass has finished leaking the sand. The first group of soldiers led by Dugu Mou must occupy the tower. At this time, Goguryeo's infantry was suppressed below the tower, and it was impossible to resist. Once the tower is captured, the artillery will begin to extend its firepower, and then continue to cover the infantry. As for the first group of infantrymen of Dugumou, their responsibility is to guard the tower and then let the second group of infantry climb up. After the second group of infantry climbs up, the garrison strength can be increased. Then continue to climb up, and you can finally achieve the goal of occupying the city. This is actually not much different from the traditional siege method, and the only difference is that when your own soldiers attack the city, they are actually covered by artillery. And there was artillery to cover the siege troops. That is to say, we can avoid being hit by the enemy's defending troops, so that we can smoothly occupy the city tower, and then a steady stream of support comes from the rear. "General, prepare the cannon, use shotgun!" Zhou Bin shouted. Zhou Bin also had a serious face. If the artillery and infantry coordination failed this time, then he, the artillery regiment commander, would definitely be sent to the Military Justice Department. After all, if his own artillery fire hurt one of his own, it would really be a huge crime, and I'm afraid he would have to shoulder the blame. However, Zhou Bin doesn't care too much. After all, he believes that infantry and artillery coordination must be the future trend. If it can be proven that infantry-artillery coordination can be successful. As one of the inventors of infantry-artillery synergy, he will definitely be reused in the future. The change in the war model means that a group of old-fashioned officers will be kicked out of the battlefield and replaced by a group of people who have adapted to new tactics and new ideas. And since Jingwen invented firearms. In fact, many old-fashioned military officers have been subjected to this. The remaining senior generals are also resting on their laurels, relying on the reputation of the founding fathers to get by. Even Li Jing, the military god of the Tang Dynasty, is about to retire. I am afraid that after the conquest of Goguryeo is over, Li Jing will retire. This is to be eliminated by history. Because new tactics have emerged, those officers who have adapted to the old tactics must gradually be updated. If Zhou Bin can become the inventor of the infantry-artillery coordination tactic and prove that it can work. Then he will definitely be reused in the future. And infantry-artillery coordination is definitely a great invention, there is no doubt about this. After all, being able to charge while covering with artillery can be said to be invincible. In this way, even if it is not siege, artillery can be used for combat, which will be very helpful for future operations. "Three! Two! One! Firepower is ready to begin!" Zhou Bin said. "Bah bang bang" The artillery began to fire shells. And Jingwen also started to turn the hourglass upside down, and the hourglass began to leak. This hourglass process will take about twenty minutes, so the firepower preparation will beCarry out twenty minutes of suppression to ensure that there are no enemies on the enemy's Anshi City Tower. "Wow" The Goguryeo troops on the Anshi city tower began to suffer casualties, but the Goguryeo troops were already prepared. Once they started to be attacked by such shotguns, they immediately retreated from the city tower. "Start pouring water!" Yang Wanchun shouted. According to Yang Wanchun's experience, once the enemy starts firing this kind of shotgun, the next thing will be explosive bombs, so Yang Wanchun began to order water pouring to prevent the explosive shells from exploding on the tower and gradually blowing up the city wall. . ¡°Bump, bump, bump¡¡± The cannon was still firing shotgun shells, but not the thunder cannon. Obviously, they wanted to suppress fire, not blow up the city wall. "Huh? What exactly does the Tang Army want to do? They don't use weapons that can explode, so why do they keep using these small particles? We have withdrawn our troops, but why are they still firing? Don't they know this? Are you wasting weapons?" Yang Wanchun thought in surprise. And Yang Wanchun had no one to answer his questions, so he had no idea that Jing Wen and the others were engaging in infantry and artillery coordination. Although Yang Wanchun is very smart, once he surpasses the experience he has learned, he may not be familiar with the corresponding things. He was just getting familiar with this kind of cannon, and he didn't know how to use it, so he couldn't understand why Jing Wen was wasting cannonballs on useless bombardments. (To be continued, please search Piaotian Literature. The novels will be better and updated faster!