During World War I, Italy once imported a batch of such artillery from France, a large number of old goods eliminated at the end of the war, arms dealers ordered a batch of M1897, and later these guns were sold to the Nationalist Government, after the transfer, M1897 also came to the independent regiment of the Eighth Route Army, and these guns were inscribed by Italian merchants in Italian, at that time our troops did not know about these, thinking that they were Italian goods, so Li Yunlong called them "Italian artillery".

Miss Seventy-Five has been eliminated by Europe during World War II, but in the Eighth Route Army, it is still quite a treasure, and the Italian cannon of the Independent Regiment was still hard to get, due to the lack of shells, Li Yunlong has not been very willing to use it before, and in today's big battle, he finally made up his mind.

"Understood! Commander, just look at it! Shen Long pushed the cannon into place, raised his thumb to measure the distance, adjusted the firing angle, and launched the precise talent, the first shell hit directly, and the heavy machine gun position of Little Japan was suddenly dumb, which is called the real one-shot soul.

"Scholar! You've done a good fucking shot! Go back and reward you with two catties of sweet potato roast! With more strength, knock that fire point on me! Li Yunlong was overjoyed when he saw this, the heavy machine gun position just now was so heavy that the Eighth Route Army couldn't raise its head, and after knocking it out, their pressure suddenly decreased a lot.

"Understood!" Shen Long immediately adjusted the muzzle of the cannon without saying a word, and fired another shot at this fire point, under the command of Li Yunlong, he wiped out all the remaining shells of the Italian cannon in one go, and each shot was a direct hit, and every explosion would make a devil's firepower point disappear, and the little devil in the city suffered heavy losses.

"This cannon is really a fucking good thing, but it's a pity that there are too few cannons in our independent regiment." Seeing this scene, Li Yunlong was both relieved and a little regretful, "It would be good that our independent regiment is as rich as Chu Yunfei's 358th Regiment, if we had Chu Yunfei's artillery battalion, then we would still need to dig tunnels so hard, and Ping'an County would have been beaten down by us a long time ago." ”

"Regiment leader, don't worry, this Chu Yunfei's baby artillery battalion, sooner or later, even people with artillery will have to be surnamed Li!" Shen Long directly snatched Li Yunlong's lines.

"Haha, that's a good thing, the people of our independent group just want to have this momentum! What's the matter, let's grab it back! However, Chu Yunfei can be regarded as helping us fight the little devil this time, let him keep his artillery battalion for the time being, let's fight Ping'an County first, and directly grab the little devil! Li Yunlong laughed, "The shells of the Italian artillery are gone, can you still fight the mortar?" ”

"No problem, just go a little further!" For Shen Long, no matter what kind of gun he can't hit, there is nothing he can't miss, and the only thing that can limit him is the number and range of cannonballs.

Li Yunlong asked people to dig a tunnel to move forward, and then transported the mortar into the tunnel, and Shen Long personally launched it.

Shen Long is not only busy himself, he also has to find time to command Monk Wei and the second battalion newly under his command, he asked the snipers to suppress the city, Pan Fu went to guide the excavation of tunnels, and Monk Wei led people to continue to disguise the commando to attract the attention of the defenders of the city, and continued to strengthen the pressure on the little devils.

At night, the Independence Regiment did not completely stop attacking, they constantly harassed the city, using the sound of mortar explosions and machine gun fire to drown out the sound of digging tunnels.

The next day, when the morning sun had just risen, the tunnel was finally dug under the city wall, and explosives could be installed for detonation.

In the original book, the city wall of Ping'an County was blown up by the demoman with an explosives bag, in fact, with the thickness of the city wall of Ping'an County, there was no way to blow up such a big gap just by sticking an explosive bag on the city wall, so Shen Long made improvements, and he specially shaped the explosives.

Monroe, an American, discovered the Monroe effect, also known as the energy gathering effect, in 1888; That is, after the explosive explodes, the explosion products are basically scattered outward along the normal direction of the surface of the explosive under high temperature and high pressure.

According to the example, after the cylindrical column is detonated, the detonation product scatters to the surrounding area along the direction of the surface of the cylinder that is approximately perpendicular to the surface of the original medicine column, and only the detonation product at the end of the column acts on the steel plate, and the area of action is equal to the area of the end of the column. The cylindrical column with a taper hole is different: when the detonation product of the cone part is scattered, it is first concentrated on the axis and converges into a flow of air with high speed and pressure, called shaped airflow, and the energy of the detonation product is concentrated in a smaller area, and a deeper hole is made in the steel plate, which is why the conical hole can improve the destructive effect.

Using this principle, Shen Long calculated the weight of the explosives needed to blow up the city wall of Ping'an County and the shape of the explosives.

"Scholar, can you just use a little explosives?" Li Yunlong was not only puzzled when he saw that the explosives he used were much less than he expected.

"It's okay, I've done it, just these explosives are enough to blow up this section of the city wall into the sky!" Shen Long replied confidently, don't look at this thing as simple, but it is a fusion of Lao Bai, Ivan Vanke, and Anim Zola's command of many super scholars, and it must not be underestimated; And the amount of explosives installed by himself is much more than in the TV series.

Lighting the fuse, the fuse sparked into the tunnel, the soldiers of the independent regiment were ready to attack, the little devil seemed to realize something, and the number of soldiers who appeared at the head of the city was much larger.

But this action made their defeat come more quickly, and with a loud explosion, a huge V-shaped gap appeared in the wall, and the attacking troops rushed up like a tide; The defenders at the head of the city were stunned by the explosion, and by the time they could react, the soldiers of the Independent Regiment had already rushed into the city.

At the forefront is the special company led by Monk Wei, as well as the second battalion under Shen Long, the soldiers of the special company have outstanding marksmanship, and they suppressed the little devil in an instant, and as more men and horses attack the city wall, there is no suspense about the outcome of this battle.

In this case, Li Yunlong also lost the interest of charging in person, he was even more curious about how Shen Long had caused so much damage with such a little explosive just now, he grabbed Shen Long and asked, "Scholar, what the hell is going on?" Teach me too? ”

Head Li, didn't you say, study, learn a fart? Why is it so easy to learn now?

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