The 12-inch cannon was so powerful that it could create craters larger than half a football field, but the next few attacks were all thwarted, and everyone finally realized that the bomb was just a bluff, but it was useless......

In fact, the problem is mainly in the rate of fire and quantity, the power of the 12-inch high-explosive shell is indeed terrifying, but the rate of fire of the train gun is much slower than that of the same type of naval gun, even if the cannon used in this train gun is very advanced, it takes almost 10 minutes to shoot 1 shot, and there are only two in total, in terms of killing efficiency, it is actually pitifully low. Pen ~ fun ~ pavilion www.biquge.info

If we take into account that the killing radius of the shell is roughly proportional to the 1/3 power of the charge, the actual efficiency is even more ugly, without knowing the enemy's exact location, bombarding the enemy's position, a few cannons may not be able to kill and injure enemy soldiers, and the efficiency of killing one or two enemies with one shell will be killed if it is dead, with the high cost of a 12-inch cannon and the life of the barrel that will be scrapped after two or three hundred rounds, not to mention the current United States, even the real American emperor during World War II in history cannot withstand such a loser.

In fact, not to mention train guns, even naval guns and fortress guns with a much faster rate of fire, when used to kill and injure enemy personnel, in fact, the deterrent power is greater than the actual lethality, and the real main artillery to kill and injure enemy personnel is always those calibers below 240mm. However, the Heavenly Punishment Column is full of biochemical soldiers, and they don't know what fear is at all, and the deterrent effect cannot be reflected at all......

After trying several times and finding that the effect was not good, the US military decisively suspended such a loser's behavior, and because of this failed example, the US military lost more and more confidence in the train artillery and rarely used it for positional fortification, but they did not know that such a special force as the Heavenly Punishment Column was just one in the whole of China and even the whole world.

In addition to the night attack and the train artillery, the three armies came up with a number of other methods, but all of them ended in failure, so that after more than a full division of casualties (including losses from night attacks and night attacks), they had to hand over the task of destroying the Heavenly Punishment Column to the two armies that had withdrawn from the West Coast, and the second phase of the Battle of Pittsburgh became more intense and brutal......

Although this will cause the attacking troops to be bombarded by the enemy's artillery, because the enemy's forward position is still empty for the time being, as long as some of the people do not die and successfully rush into the position, then it will successfully penetrate a wedge in the enemy's defensive line, and the countless craters left by the enemy's artillery bombardment have formed a passage that can facilitate the subsequent reinforcements to hide in the anti-artillery artillery, and sooner or later the entire defense line can be pried open.

However, even after a certain amount of drills, the accidental injury rate of the new tactics was still a little too high, and the enemy's artillery bombardment was even more accurate and ruthless, with more than 10,000 troops pressed up, and in the end less than 1,000 people were able to successfully storm the enemy's trenches, and this point of men was immediately fiercely attacked by the biochemical soldiers who returned to their positions. With a small number of people, poor weapons, and a broken establishment, how easy is it to resist the counterattack of the Heavenly Punishment Column?

Fortunately, the command of the US Seventh Army was mentally prepared before the battle, and although it was a key attack, the troops prepared for this were not much less than the previous all-out attack. At the same time, the U.S. military once again implemented artillery offensive tactics, if the previous artillery bombardment only had a great possibility of accidentally injuring its own officers and soldiers, this shelling will definitely hit its own people, because the target of the artillery is simply the position that the two sides are desperately fighting for!

After a heavy artillery bombardment, the officers and men of either side suffered heavy losses, and considering the greater number of the Heavenly Punishment Column, they suffered a great loss when they landed. In addition, the reinforcements of the US army were very resolute, and in the end, the Heavenly Punishment Column still failed to recapture the position, and then after this place fell into the control of the American Army, the entire defense line became no longer safe, and the Heavenly Punishment Column could only retreat to the second line of defense, and then in the process of retreating, it was attacked by the US Army's long-range artillery and suffered a lot of losses, but fortunately, their artillery was still powerful, and immediately let the counterparts of the US Seventh Army know what it means to "touch the tiger's ass"......

In any case, after all, the US Seventh Army still successfully overcame the first line of defense of the Heavenly Punishment Column, which can be said to be the first time since the outbreak of this war that the US military has completely achieved its goal, and killed and wounded nearly 6,000 enemy troops, which is also unprecedented since the beginning of the war, although it has suffered 40,000 or 50,000 casualties for this, but it still makes the US military feel refreshed, and the Seventh Army Command immediately sent a report to the White House, but as soon as this telegram was sent, the Heavenly Punishment Column came back with a hard slap......

As early as the construction of fortifications, the Heavenly Punishment Column was ready to lose its position, for this reason they not only built a number of defensive lines in order to resist layer by layer, but also accurately measured the positions of the more important shelters, anti-artillery holes, toilets, etc., just like the fortress artillery marked the sea area in advance, so that the Heavenly Punishment Column's already high-precision artillery bombardment was at the top of the hundreds, and further, on this basis, after all the personnel were withdrawn, The artillery of the Heavenly Punishment Column immediately carried out a highly targeted retaliatory artillery bombardment on the first line of defense!

The U.S. military, which was still immersed in the joy of victory, did not expect so much, and subconsciously hid in those positions they thought were safer after being attacked, but the fortifications built by the Heavenly Punishment Column could resist 150mm high-explosive bombs at most, and in any case, they could not prevent the big guys with 210mm caliber and the fuse at the bottom of the bomb, not to mention that those places were also attacked with extremely high accuracy, and the result was naturally heavy casualties, losing more than 30,000 people in less than an hour, and having to ask for help from the rear again, Then the American reinforcements were repaired by 120mm and 82mm caliber mortars......

Even the heavily battered U.S. Seventh Army almost lost the ability to continue a large-scale offensive, and it was not easy to even hold that line of defense, because when the Heavenly Punishment Column built fortifications, the idea was to give priority to external defense, and in the face of attacks from the second line of defense, the effect of these fortifications was actually not very good...... (To be continued.) )