Before anyone could leave, the heavy artillery battalion of the Western Sichuan Advance Regiment had arrived at Nanjing Pukou Station.

At the same time, the First Air Force Wing of Western Sichuan also jumped to Wuhu Airport, and Wing Commander Yin Yihang, all the pilots of the West Sichuan Air Force, reported to their dear President Liu.

As the official position gets higher and higher, someone's personality becomes more and more kind.

When this guy saw a group of subordinates, he was like a ruffian, without a trace of a commander at all, he himself wore a hat crookedly, wore clothes diagonally, and even if he didn't hold a big smoking gun, he was a proper ruffian.

When he saw the serious and upright officers, Commander Liu was still a little uncomfortable, because most of the instructors of the West Sichuan Military Academy were Germans, so they had strict requirements for discipline, and when the students tasted the benefits of discipline, they carved military discipline into the bone marrow.

The soldiers of these advance units are the best soldiers.

They are all Jia Lian, Guo Qixun, Yin Qinlan and others, carefully trained tigers, and they are the pride of the West Sichuan Military Academy in the West Sichuan Military Academy.

These soldiers have reached a new level in terms of individual combat skills, collective cooperation, or persistent pursuit of discipline, so Commander Liu's personal casualness and freedom are not only ineffective, but on the contrary, they are more conscientious and boring.

With such no humor cells, all like iron puppets, Liu Yun couldn't play treasure anymore, so he had to take out the majesty of the principal and announce his battle order to his subordinates.

The first is the Air Force.

Although Nanjing and the Japanese invaders have reached an agreement, and in the next seven days, Shuangfa will no longer send planes to participate in the operation, but there is still no problem for everyone to play a side game, not to mention that in order to prevent the Japanese army from tearing up the agreement, some fighters are also needed to carry out patrol supervision every day.

The 1st Wing of Western Sichuan has three flying groups, namely the Leopard Fighter Group, the Flying Bear I Heavy Fighter Group, and the Flying Bear II Bomber Group, with a total number of nearly 200 fighters.

In order to ensure the air safety of the heavy artillery units in western Sichuan during the shelling of enemy ships, Commander Liu decided that the air force of western Sichuan would take up the task of escorting the air and by the way, act as the ears and eyes of the heavy artillery units, and transmit the observed positions and coordinates of the enemy ships to the artillery positions in a timely manner.

In the face of such a heavy task, Wing Commander Yin Yihang did not dare to be negligent in the slightest, and reported his combat plan on the spot.

He will use the "all the grass and trees" tactic.

The principle of tactics is very simple, because although one is a fighter and the other is a bomber, if you look at them from a distance, you can't see the difference between them.

Since the Japanese army wants to ground China's heavy fighters at any cost, it just shows that they are very afraid of flying bear fighters, and if there are two flying groups, that is, more than 100 flying bear I. planes, they will not dare to disobey the grounding agreement before the Japanese devils have thought of countermeasures.

Although the performance of the Japanese fighters was slightly worse, they were all veteran pilots, experienced and tactically sophisticated, and their numbers were extremely large, especially the four or five aircraft carriers cruising on the waters of the East China Sea, and they were the elite of the Japanese air force.

Now the Japanese army wants to improve its fighters, and Commander Liu also wants to upgrade hundreds of Leopards to Leopard II.

The Leopard II is the Jianjiao II fighter, with a wingspan of 10.8 meters, a total length of 8.1 meters, an engine power of 950 horsepower, and a fighter crew of 1 person, but it strengthens the armor parts in the more vulnerable places, such as the cockpit, engine and fuel tank, etc., with a weight of 1.9 tons and can carry 0.8 tons of fuel or ammunition.

The aircraft has a maximum speed of 510 km, a cruising speed of 290 km, an altitude of 12,000 km, a range of 1,800 km, and is equipped with two 12.7 mm machine guns and a 22.5 mm cannon that can carry 250 kg of bombs, or two 100-liter drop fuel tanks.

And the Flying Bear I. fighter, after all, is a double-engine heavy fighter, although it is equipped with two cannons, everyone can quite understand, after all, it is a heavy fighter with air superiority, and if a large-caliber aviation gun is not installed, it is a strange thing.

Therefore, aviation powers such as Europe and the United States will not pay much attention to it.

However, once the Leopard II fighter appears, it will inevitably cause a worldwide upsurge of follow-up, and even directly open the "machine gun era" of light fighters, this change, in the short term can not see the result, if another year or two, you will find that the entire aviation interface is beyond sight, all kinds of cannons will be rampant in the blue sky.

And Huaxia's industrial base is too poor, in the face of such changes, it is actually bad news.

This is also the reason why Liu Yun is reluctant to upgrade the Leopard fighter, but now he can't take care of it much, because the devil is already planning to equip the cannon, and if he doesn't launch the Leopard II, he will lose a lot of money.

However, the Leopard II fighter can only be produced in western Sichuan, so the fighters needed on the front line must be transported from the western Sichuan arsenal, not only the distance is long, but also to let the pilots get acquainted with it, only a short seven days, it is really a bit tight.

On August 16, 1937, the smoke of gunpowder was thick in all parts of China, and a new war was imminent.

While asking aircraft engineers to urgently improve all kinds of fighters to deal with the heavy fighters in China, the Japanese army officially announced the formation of the Shanghai Dispatch Army, appointed General Matsui Ishine as commander-in-chief, and led the two divisions in the lead period to Shanghai for reinforcements immediately.

On August 19, the Japanese army in North China officially adjusted its deployment and used part of its forces to contain Tang Enbo's division in Nankou, and its main force flanked Zhangjiakou.

Fortunately, all friendly troops in Shanxi have been invited to set off and rush to the aid of North China and Taiyuan, while the Yan'an, Shaanxi and Sichuan armies have all sent elite troops to go all out to prepare for the war against Japan.

This day happened to be the third day of the signing of the armistice agreement between the Chinese and Japanese air forces.

On this day, it also happened to be the day when Major General Liu Yicheng personally led the first and second battalions of heavy artillery to go out.

In order to save trouble for himself, this guy has already pushed off the position of the commander of the 13th Artillery Regiment, he thinks that the fewer the number, the better the concealment, and the better the shelling of enemy ships, Lao Jiang and others naturally have no choice, who called this guy a military tycoon, he is now the "boss".

At about 10 o'clock in the morning, the slow military train finally shook to the outskirts of Shanghai.

Commander Liu has no combat skills, but he has a smart brain.

This guy had already personally piloted the fighter planes and carried out repeated reconnaissance of the combat areas in Shanghai, and even the predetermined artillery positions had already been selected.

As soon as the train arrived near Yiren District in Jiading County, Liu Yicheng notified the military train to stop.

In broad daylight, this guy actually transported 72 heavy artillery pieces off the train one by one and directly transported them to the reserved artillery position, which made the officers and soldiers of western Sichuan and the central army accompanying the car all pinch a cold sweat, for fear of being attacked by the Japanese army.

These heavy artillery pieces were towed by heavy towed vehicles along the improvised roads and dragged one by one to the field fortifications in Lupu Township.

On the night of August 16, Commander Liu personally drew the drawings of the fortifications, and then the combat engineer battalion in Nanjing, together with the engineer battalion in western Sichuan, temporarily constructed a simple position.

However, the position consisted of criss-crossing trenches, some anti-infantry ring fortifications, and partly cat's ear holes with anti-artillery functions.

The construction of the cat's ear hole is very simple, it is to use the side of the straight trench, put down a steel plate inclined to 60 degrees, and then cover the steel plate with more than a foot of sand, and the soldiers can only curl up in it, which looks like a cat ear, so it is named.

Cat's ear piercing, anti-infantry artillery may be fine, when it comes to anti-heavy artillery, it hangs.

The Jiading Lupu field position was originally not to defend against artillery, but to prevent the sneak attack of the Japanese infantry and the bombing of enemy aircraft.

Because the enemy ships on the Huangpu River could not hit this place, and the fighters of both sides stopped.

Someone has always been afraid of death, even if there is an ant mecha, he can't carry a large-caliber naval gun.

With the effective range of 152 mm heavy artillery, it is just enough to cover the Japanese land positions and the enemy ships on the Huangpu River, and if they fire special shells, they can even hit the Wusongkou area, and on the contrary, the artillery positions are just the limit distance for the enemy ships to counterattack.

Therefore, even if the enemy really wants to fight back, it is very, very difficult.

Moreover, in view of the case of the attack by the water ghosts, the warships of the Japanese Third Fleet did not dare to spend the night on the Huangpu River, and usually set out from the waters of the East China Sea during the day, sailed into the Huangpu River through Wusongkou, and supported the Japanese marines by artillery fire, regaining the positions they had lost at night one by one, and had to run away as soon as possible at night.

Therefore, the day is the world of the Japanese army.

The fierce bombardment of large-caliber naval guns shocked the entire Shanghai area.

This is the main reason why there are tens of thousands of elite German weapons in China, but they can't take thousands of Japanese troops stationed in Shanghai.

Because Zhang Zhizhong and other Chinese officers and soldiers could only take advantage of the darkness of the night to organize death squads to launch melee night battles, using a large number of human lives to touch the Japanese army's strong fortifications, and often as soon as it was dark, the Japanese ships would immediately launch a comprehensive counterattack.

This often means a busy day.

After the signing of the Air Force Armistice Agreement, the arrogant Japanese ships also restrained a lot.

On the Songhu battlefield, more than a dozen Flying Bear fighters flew at any time, although the air forces of both sides abided by the agreement and did not launch an attack, but the murderous reputation of the total annihilation of the Luwu Air Force still made the devils shudder a little, in case the Huaxia Air Force went crazy, the Japanese warships would suffer a big loss.

It is not a great secret that Huaxia set up artillery positions semi-openly in the area of Jiading Lupu.

It's a pity that the Japanese army is too well planned, and the only cannon that can get here is the 203 mm naval gun on the "Izumo", and if they really want to fight, they can barely reach it.

The problem is that the power of the naval guns is great, but the life of the barrel is too short.

If the 203 mm caliber naval gun really wants to shoot at the extreme distance, it is often less than 200 rounds, and the entire gun barrel has to be completely scrapped.

From the outbreak of the Songhu War on August 13 to the 19th, the German armament division led by General Zhang Zhizhong fought with the Japanese marines for almost a week, but only occupied the peripheral positions of the Japanese troops stationed in Shanghai, wounding and capturing more than 5,000 Japanese soldiers.

However, there were many Japanese expatriates and veterans in Shanghai, and after a period of emergency conscription, the number of Japanese troops stationed in Shanghai remained at about 5,000.

Therefore, it is still out of reach to completely annihilate the Japanese army.

In another time and space, due to the scarcity of heavy artillery of the Huaxia army, the Huaxia troops had no choice but to silence during the day, allowing the enemy's planes and artillery to bombard indiscriminately.

The Huaxia artillery also paid attention to one point, and all kinds of heavy artillery artillery positions tried their best to avoid the effective range of the Japanese naval guns.

Once covered by Japanese naval guns, the entire artillery position had to be reimbursed.

However, as soon as the six or seven days passed, the positions of the Japanese troops stationed in Shanghai continued to shrink, and even the commanders of the Japanese marines became anxious and repeatedly asked the Japanese base camp for help, and they could no longer hold on for the second seven days, hoping that the Japanese troops supporting them would launch a landing operation as soon as possible, otherwise the Shanghai concession would be lost.

At three o'clock in the afternoon of August 19, the two heavy artillery battalions in western Sichuan were finally fully prepared.

Seventy-two 152-mm heavy guns, divided into four clusters, between which were commanded by radio stations.

Under the order of Commander Liu, more than 30 heavy artillery pieces began to be test-fired one by one, and soon the strategic places such as the Huishan Wharf in Shanghai, the Tiantongan Barracks, the Gongda Yarn Factory, the Hongkou Park, and the Japanese Army Headquarters on Jiangwan Road were turned into a sea of fire, and the enemy's firepower superiority was instantly reversed

The Chinese soldiers on the front line cheered thunderously.

The 152 mm heavy gun in western Sichuan has a caliber of 152 mm, a tube length of 32 times the diameter, a dead weight of 4.2 tons, and a muzzle velocity of 765 m / s, even without any means of extending the range, the firing range can reach 24.7 km, and the officers and soldiers of the two artillery battalions are the elite of the elite.

After all the test firing was completed, the rapid fire began, and suddenly the terrifying rate of fire broke out, reaching 8 rounds per minute.

With the heavy artillery regiments directly under the direct jurisdiction of China joining the Shanghai battlefield one by one, and the enemy's air force could not be dispatched, the Japanese Third Fleet had already kept a low profile, and generally cruised around Wusongkou, in order to prevent accidents from happening, so as to facilitate the transfer to the depths of the East China Sea to evade.

However, Commander Liu's heavy artillery battalion may have really beaten the Japanese troops stationed in Shanghai miserably.

After a burst of howling wolves for help, Vice Admiral Kiyoshi Tanigawa, commander of the Third Fleet, had no choice but to send five or six cruisers, including the "Izumo" and the "Onifuro," to the Huangpu River to support the marines in the Hongkou area.

The "Izumo" relied on its thick skin and gun, and before it had fully arrived in the Hongkou area, it found a favorable position and prepared to open up the formation for a full-speed counterattack.

As soon as the ship slowed down, it was immediately detected by the Flying Bear fighter in the air.

The pilot quickly transmitted the position and data of the enemy ship to the Lupu artillery position through the radio station in the air, and Commander Liu was overjoyed, and when he waited for this time, he immediately ordered all the artillery to turn the muzzle and attack the Japanese ship.

The 203-mm naval gun of the "Izumo" is very terrifying, but it is also relatively bulky, and it often takes two or three minutes to launch a shell.

Major General Liu's heavy artillery cluster is not welcome.

It has always been the first to strike, and the second to suffer.

I saw a burst of cannonballs falling, sending the "Izumo" into thick smoke, with heavy casualties and scars.

As a result, the speed of the ship was greatly reduced, and it was impossible to see clearly the direction of the return fire.

The commander of the Third Fleet, Vice Admiral Tanigawa Kiyoshi, was shocked and hurriedly ordered all the ships to return to the sea as soon as possible, but unfortunately it was too late, the Huangpu River is not as narrow as the East China Sea, and the water surface here is not only narrow, but also slightly tortuous.