In the previous life of Stone Bear, a border wall of more than 1,100 kilometers ran between the United States and Mexico, artificially isolating the border between the United States and Mexico.

But in this time and space, no matter it’s the high desert area from Tijuana to El Paso, or the shore of the Rio Grande, there is no border wall, so the two and a half divisions of the Grim Bear Army are very relaxed. It was advanced to the new Spanish governor's district.

　　 Four-star Admiral Bone Spear led the 2nd Division to the west of the Sierra Madre Mountains along the flat area of ​​the west coast southward, as the West Route Army. The commander-in-chief of the army, Kuai Ma, led the first division and the eighth division of the five regiments from the east to the south of the West Madre Mountains, as the Eastern Route Army.

　　 On the fifth day of entering the territory of the later Mexico, the Eastern Route Army drove to the city of Chihuahua.

　　 Chihuahua is the capital of Chihuahua, the largest state in Mexico. This tribe, formerly an Indian, was converted into an important city by the Spanish in the early 18th century.

　　 This used to be the trade center between the New Spanish Governorate and the Yanhuang tribe, but now, this city has become the first roadblock encountered by the Eastern Route Army.

　　 In fact, it is a bit exaggerated to say that the stumbling block, this city formed by two fortresses as the center, is far from being comparable to later generations. The current population of this city is only over 10,000 people, most of whom are from Spanish domestic traders.

　　 But because this city belongs to the trading center in the northern part of the Governorate of New Spain, there are still about 1,200 Spanish troops stationed in this city.

　　 The two fortresses of Chihuahua are about 1.5 kilometers apart from each other, and they are both built on two small hills. These two fortresses are also the garrison of the Spanish Army.

　　Between the two fortresses is a market established by ordinary residents and Spanish merchants. The main fortress in the north is named Colonel de Carroll fortress, which is built on a small hill with a relative height of more than 200 meters.

　　 When the East Route Army came here, more than 1,200 Spanish Army soldiers huddled in this fortress.

　　 Compared with the secondary fortress to the south, the height of Colonel de Carroll's fortress is higher, and the terrain is more dangerous, and the defense effect here is better. Therefore, the Chihuahua’s garrison, under the command of its commander, resolutely abandoned the deputy fortress to the south, and concentrated all its forces in the main fort.

　　 If the East Route Army did not have powerful artillery, it would be a big problem to win this fortress entrenched on a hill more than two hundred meters high. But now, the Spaniard's approach of defending from danger looks more like a fight between trapped beasts in the eyes of Kuaima.

　　For such a situation, the experienced Kuai Ma has a hundred ways to deal with it.

　　 So he did not hesitate to give an order for the first division's divisional artillery regiment and the eighth division's divisional artillery regiment to start erecting artillery positions.

　　 Facing such a precipitous fortress, Kuai Ma would not be so stupid as to fill it with the lives of his hands. To deal with such a fortress, powerful artillery and mortars with extremely high ballistic arcs are the best.

　　Before the founding of the People’s Republic of China, the Grim Bear Army’s weapons and equipment had once again been upgraded. In particular, the artillery unit of the Grim Bear Army received the greatest improvement.

In the past, the divisional artillery regiment of the Grim Bear Army was dominated by 105mm and 76mm artillery, but now, with the installation of 122mm and howitzers, this heavy artillery with an effective range of easily over 12 kilometers is the Grim Bear The army division is the main artillery of the artillery regiment.

　　According to the standard of the later generations to distinguish the caliber of the artillery, 122mm can already be regarded as a real heavy artillery.

　　 Now the divisional artillery regiments of the Grim Bear Army no longer install 76mm artillery. This artillery is now the main artillery of each regiment’s direct artillery battalion. The main gun calibers at the division level are 105 mm and 122 mm.

　　 And compared to the number of artillery groups of the previous divisions, after this upgrade, the number of artillery groups of the divisions and divisions has also increased.

　　 Now the number of guns in a divisional artillery regiment is like this, the number of 122mm heavy guns is twelve, and the number of 105mm plus howitzers is 18! A divisional artillery regiment has a total of 30 artillery!

　　 Soon, about seven kilometers away from the main stop of Chihuahua, sixty artillery pieces of the first and eighth divisions were set up. At the same time, the aiming hot air balloon used for guidance and calibration also quickly lifted into the sky.

　　 On July 21, 1788 AD, the first battle between the Eastern Route Army and the Spanish garrison of the New Spain Governorate's southern expedition started, known as the "Chihuahua Annihilation" in history.

　　 Yes, this battle was defined by later historians and military scientists as a battle of annihilation, not an offensive and defensive battle.

　　 The process of this battle is really too one-sided. The use of crushing to describe this battle that only lasted less than ten minutes is a bit unqualified...

　　 A 122mm plus howitzer and a 105mm plus howitzer took the lead in firing two test rounds.

When the two artillery shells exploded about two hundred meters away from the main plug of Chihuahua, the observer on the artillery hot air balloon immediately relayed the news of what they saw to the artillery positions below. The next moment, according to observations The data and coordinates provided by the hand~lightnovelpub.net~ Each gun squad began to adjust its gun pitch angle.

　　 Half a minute later, the first round of volleys began, accompanied by an earth-shattering gunfire. After a total of sixty shells flew in the air for about fourteen or five seconds, they accurately covered the entire Chihuahua main plug.

　　 These sixty shells fell very evenly, most of them landed near the fortress, about ten shells accurately smashed into the fortress, four of which were 122mm high-explosive grenades...

　　 Compared with the charge of 105mm shells, the charge of 122mm high-explosive grenade is close to four kilograms, and the weight of a shell exceeds 22 kilograms.

　　 Such a shell fell in the fortress, its lethality is extremely terrifying.

　　 When four 122mm high-explosive grenades and six 105mm high-explosive grenades exploded in the fortress at the same time, the interior of this small fortress was immediately messed up.

　　 And it wasn't just these ten shells that hit the fortress, there were about six or seven shells that directly smashed the fortress wall. The fortress wall, which was originally extremely strong, immediately became as fragile as a blank sheet of paper in front of the explosive power of the 122 mm high-explosive bomb.

　　 The city wall facing the shelling position immediately collapsed for about twenty meters.

　　 The most terrifying thing is that for the next five minutes, an average of 180 shells fell inside and outside the fortress in the next five minutes. Among them, at least 20 shells fell inside the fortress. This fortress completely turned into **** in a very short time...