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The Type 95 55mm heavy cannon was a cannon that was finalized and mass-produced only after the establishment of the empire. This artillery has a caliber of 55 mm, a barrel length of 5 times the caliber, a shell weighing 50 kg, a muzzle velocity of 60 meters per second, a firing rate of 5 rounds per minute, a maximum firing range of kilometers, and a gun weight of tons. When using armor-piercing shells, it can effectively penetrate forts made of reinforced concrete with a thickness of 400 to 450 mm, and are the main weapon of the Chinese Army against enemy fortifications. At present, all military regions or group armies are only equipped with one battalion and four guns.

The fierce fighting in Shuangchengzi continued, and the Russian 05th and 7th Divisions, which were besieged and flanked from both sides, tried their best to attack the defensive line formed by the 14th and 46th Divisions, trying to break through a gap and escape back into Shuangchengzi. However, in the face of the strong firepower of the squadron, the corpses on the ground had already accumulated a thick layer, but they still could not successfully break through.

At the same time, the 7 fortresses of Shuangchengzi and hundreds of heavy artillery guns launched a fierce artillery bombardment of the 14th and 46th Divisions, trying to open a way for the 05th and 7th Divisions. However, no matter how fierce the artillery fire of the Russian army was, it could not meet the two Russian divisions that were surrounded. However, they did cause very heavy casualties to the 14th and 46th Divisions of the Chinese Army. Less than an hour after the shelling began, the two divisions had already killed thousands of people.

"Cannon battalion, ready for battle. Destroy the fortresses of the Russian army! Major General Zhang Shusen, chief of staff of the Second Group Army, ordered with red eyes. Before the establishment of the group army, he was the commander of the 14th Division, and the 14th Division still fought to the death under the heavy shelling of the Russian army, which made him very moved, and at the same time he was also very angry with the Russian army.

4 Type 95 55-mm heavy cannons of the heavy cannon battalion, which quickly completed the pre-shelling preparations. At a distance of kilometers from the fortress of the Russian army, shelling began. This distance is already outside the range of the Russian army's fortress artillery. They can be confident and bold in shelling without fear of retaliation.

Several of the fortresses of the twin cities are equipped with old-fashioned fortress guns. The maximum caliber is only 20 mm, and the firing range is only five or six kilometers, which is far from being a threat to heavy cannons from eight kilometers away. Several fortresses in Shuangchengzi, although they are also made of reinforced concrete, do not add steel plates and so on, and the thickness is only 400 mm, which is far less than the fortresses in Vladivostok.

At 5:00 p.m., the shelling of the heavy cannon battalion officially began. The first target is the northernmost fortress No. 1.

"Boom! Rumble! Rumble! "Dozens of armor-piercing shells. With a muzzle velocity of nearly 700 meters per second, it bombarded towards the No. 1 fortress of Shuangchengzi. Fifty-kilogram shells. Under the action of huge kinetic energy, it bombarded the fortress fiercely. Although the walls of these fortresses are very hard, they are still somewhat difficult to resist under the power of armor-piercing bullets. Even if you can get away with it with a blow of one or two shells, you won't be able to hold out for long. Armor-piercing shells and grenades are different, with a smaller charge, mainly by kinetic energy to penetrate thick armor and destroy targets internally.

The armor-piercing shells used by Chinese artillery are cap-piercing shells. Stronger armor-piercing. The cap armor-piercing bullet is to weld a quilt cap with good toughness and blunt shape on the outside of the pointed head to reduce jumping. While the cap hits the armor and is damaged, it also causes certain damage to the surface of the armor, which is conducive to the continuous armor piercing of the complete pointed projectile, and the ordinary armor-piercing bullet is mainly used to deal with homogeneous armor, and the latter kind has strong armor-piercing ability due to the addition of a hood and a hood on the warhead. It can be used against heterogeneous armor with hardened surfaces. Although the trajectory of the cap-piercing projectile is relatively straight, the hit rate is higher than that of the high-explosive projectile, and it should be the preferred target when attacking tanks. The armor-piercing bullet also has the phenomenon of automatic turning positive during the armor-piercing process, and the armor-fragmenting bullet can accumulate blunt explosives outside the streamlined armor and detonate normally. Causes the front surface of the armor to collapse.

The No. 1 fortress of Shuangchengzi, which had been heavily shelled, several of the main forts, were hit by several armor-piercing shells, and the walls of the forts were pierced. After the armor-piercing shell penetrated the battery, it exploded inside, destroying the entire battery, and the Russian soldiers and artillery inside were all destroyed.

Just twenty minutes later, Fort No. 1 was completely destroyed. Immediately afterwards, the heavy cannon battalion set its sights on Fort No. 2. Under such a blow, the thick fortress of the Russian army could not hold on at all. Gradually, it was destroyed by heavy cannon battalions one after another.

It was only when Agata discovered that the shelling of the fort was getting weaker and weaker that something was wrong. At this time, it was already six o'clock in the afternoon, and the No. 1, 2, and 3rd fortresses of the Russian army had been destroyed. The remaining four forts, although still firing, may not escape the fate of destruction.

"General, what now? The 05th and 7th Divisions were besieged and could not withdraw to Shuangchengzi. The fortresses on which we rely cannot withstand the artillery fire of the Chinese. What should we do now? "The commander of the first division looked at Agata with a look of horror. There is no doubt that the current Russian army has fallen into a desperate situation.

Agata's face was also gloomy, as if it was about to drip water. He had previously boasted to the Governor of the Far East, Aleksayev, that he would be able to withstand the attack of the squadron in Shuangchengzi. But now, in less than half a day, 20,000 of the 30,000 Russian troops in Shuangcheng have been surrounded, and even the strong fortresses will be wiped out one by one. He is now very skeptical that the Russian army in Shuangcheng will be able to hold out until tomorrow.

"General, why don't we obey Governor Aleksayev's advice and withdraw to Vladivostok!" The commander of the first division built yì road. Now, he can't care about the other colleagues who are besieged, once all the fortresses on the periphery of Shuangchengzi are destroyed, it is time for the squadron to attack Shuangchengzi in a big way. At that time, his first division alone will obviously not be able to resist the attack of the strong squadron.

Agata smiled miserably, if it had been when the defenders of the twin cities of Aleksaiev had withdrawn to Vladivostok before, he might have led his army to retreat south, maybe there would have been no problem. However, he had clearly guaranteed that he would resist the attack of the squadron, and now that he had withdrawn with a broken army, Governor Aleksayev would definitely not let him go. Although Aleksayev did not serve as the governor of the Far East for a long time, his personality is very clear to everyone. For those who dare to disobey orders, there will never be good results.

"If the twin cities are lost, I can guarantee that we will definitely be court-martial when we return to Vladivostok. Three divisions, if only one division is brought back, Governor Aleksayev will definitely not let us go! Agata said helplessly.

"Then we're just going to have to defend the Twin Cities?" The commander of the first division said with some despair. When he comes, he will defend the twin cities, then he will simply look for death again!

"Let's hold out for two more days, and then retreat, in this case, we can be regarded as giving Governor Aleksayev an explanation!" Agata said. If you retreat in just half a day, this is really not true. Besides, now the twin cities, the civilians have all been evacuated to Vladivostok, and the whole city has been transformed into a fortress, full of fortifications, if you are lucky, you should be able to hold out for two days. Although the squadron has a large number of troops, the Russian army has a geographical advantage. Compared with the squadron, they are more familiar with Shuangchengzi, and if they persist for two days, it should not be a big problem.

"Alright then, General! It would be great if the 05th and 7th Divisions could withdraw some of their forces! The commander of the first division said.

At this time, the battle outside the city has reached the final stage. The seven forts outside the twin cities were destroyed one by one under the bombardment of heavy cannons. By nightfall, all seven forts had been destroyed, and the 46th Division took the opportunity to send troops to occupy them. The defenders of the Twin Cities have retreated to the city. The 05th and 7th Divisions, which were surrounded on the east bank of the Peter the Great River, were still resisting, but it would not be long before they were annihilated.

The fierce battle lasted until late at night. The encircled Russian army, only then all laid down their arms. However, two or three thousand people still took advantage of the night to break out of the encirclement and fled back to Shuangchengzi.

In this battle, the squadron annihilated nearly 20,000 enemies and lost more than 2,000 and nearly 3,000 of its own. The 14th and 21st Divisions, which were the main attackers, suffered relatively heavy losses. However, the Russian army in Shuangchengzi only has more than 10,000 people left, and even if they fight in the streets, there is no big problem in annihilating them.

The sappers repaired the damaged bridge on the Peter the Great overnight, and the squadron on the west bank of the river was able to drive all the way to the east of the river. Although it was already late at night, the squadron still did not get a rest, and Major General Xie Dingkun, commander of the Second Group Army, issued a new order.

"The 56th and 57th Divisions, which set out overnight, set out to form positions south of Shuangchengzi, preparing to block the Russian troops moving south from Shuangchengzi or the Russian army heading north from Vladivostok. This time, we will annihilate all the Russian troops in Shuangchengzi, and we can't let any of them go! Major General Xie Dingkun ordered. In the afternoon battle, the squadron suffered heavy losses. If the Russian army escapes, it will never work.

"Yes, Commander!" The commanders of the two divisions immediately received the order. More than 30,000 men from the two divisions went to a place 10 kilometers south of Shuangchengzi overnight to build a blocking position. The heavy task of conquering Shuangchengzi fell to the 14th, 21st and 46th Divisions. In addition, the 25th Division is also rapidly moving south, and it is expected to be able to reach Shuangchengzi tomorrow afternoon.

PS: The second update is here! Continue to run naked next week, depressed! Ask for all kinds of support! (To be continued.) If you like this work, you are welcome to come to Biquge www.biquge.info to vote for recommendations and monthly passes, your support is my biggest motivation. )