When Altan Khan learned that the Southern Tang barbarians in Dongsheng City had run out again, and they had brought a lot of tools and materials, and went directly to the ground seven or eight kilometers away to start construction and build the city, Altan Khan didn't know what these Southern Tang barbarians wanted to do at first.

But Altan Khan is also a hero, but after being puzzled for a moment, he instantly sketched out a terrifying scene in his mind!

A fortress defense line extending from Datong Mansion to Dongsheng City, and from Dongsheng City to Yinshan, this first long and huge defense line, on the surface, does not seem to be as terrifying as the Great Wall, but there are dozens of fortresses along the way, and each fortress is easy to defend and difficult to attack, and the distance is not far, and they can support each other.

After these fortresses are stabilized in the future, it is estimated that those Southern Tang barbarians will build a new Great Wall to connect the various earthen fortresses.

At that time, this will be a line of defense that can cut the entire Tumochuan and Hetao areas.

It is self-evident what kind of threat such a line of defense can pose to the Tatars, it is quite terrifying.

After such a scene came to mind, Altan Khan knew that he only had two choices left, either to choose to completely withdraw from the Hetao and Tumochuan regions, or to choose to conquer Dongsheng City and break the hand of the Tang Empire reaching out to the grassland.

It is impossible to retreat from Hetao and Tumochuan, and withdrawing from his right-wing 30,000 households is tantamount to losing the foundation, and once the foundation is lost, I am afraid that the entire 30,000-wing right-wing households will not be able to gain a foothold in the grassland.

If you don't retreat, then you can only fight.

But directly attacking Dongsheng City, that is definitely not a wise choice.

After pondering for a long time, Altan Khan was anxious about the generals, and then gave the order to withdraw the troops!

They are retreating from the outskirts of Dongsheng City!

After retreating, do you flee north directly?

In a pig's eye!

Instead, they went south!

To storm Dongsheng City, which has 20,000 people garrisoned, even if Altan Khan puts all his troops into it, he may not be able to conquer it, but those simple earthen fortresses in the south do not have such a strong defensive capability.

Although it was very difficult to attack, as long as you were willing to pay thousands of casualties, you would definitely be able to take it, and then block the supply lines of the Southern Tang barbarians here, forcing the Southern Tang barbarians to mobilize their forces.

In the process of mobilizing the troops of the Southern Tang barbarians, they were defeated one by one on the grassland.

In this way, you can give full play to the advantages of your own cavalry!

Altan Khan did this, but Deng Xide was not surprised, the reason why he sent troops to the north to continue to build the city was not to really build another defense line of hundreds of kilometers, but to put on this posture to force Altan Khan to make changes.

It is better to force Altan Khan to storm Dongsheng City, of course, Altan Khan is not stupid, he did not choose to attack the city, but chose to attack the rear, which is also expected by Deng Xide.

Immediately, he was the herald of the troops: "Command the cavalry corps, closely monitor the movements of the main force of the Tatars, and at the same time send orders to the rear, let the forts be strictly defended, and then the first corps will concentrate its forces on standby!" ”

"Command all the departments of the headquarters, get ready to fight!"

Altan Khan went south, and it was very likely that he would attack and completely cut off the supply line, and Altan Khan must have known that if there were fewer people sent, it would be useless to have 10,000 cavalry forces, and if he wanted to completely block the supply line of the Ninth Army, he had to gather 20,000 or 30,000 heavy troops.

Otherwise, they won't be able to hold it even if they are defeated!

After months of planning, the Tatars were finally forced to fight a decisive battle step by step, which made Deng Xide quite excited.

Originally, his plan was to use the early fortification of the city, build the defensive line, and force the Tatars to fight him in Dongsheng City, although the current decisive battle location cannot be in Dongsheng City, but it is the same in other places.

As long as it is a large-scale decisive battle, then it is a good thing for his Ninth Army.

After Deng Xide's order was passed on, the headquarters of the Ninth Army, the cavalry corps, and the units of the First Corps were all ready to fight, and at the same time, they also carried out a certain maneuver to avoid the main forces of each division being too scattered and giving the Tatars a chance to break through, but their maneuvers were still carried out around the defensive line.

The response of the Southern Tang barbarians, Altan Khan did not care, originally he still left a back hand, wanting to take the opportunity to mobilize the main force of the Southern Barbarians in Dongsheng City, and then send a partial division to attack Dongsheng City, but found that although the main force of the Southern Tang Barbarians went south, there were still 5,000 troops stationed in the city.

Dongsheng City, which is garrisoned by 5,000 troops, does not have a force of 20,000 or 30,000, so don't expect to be able to attack the city at all, and the partial division he left behind is only about 10,000 cavalry, and there is no hope at all, so it is very simple to transfer this partial division back.

At this time, from the map, you can see that about 50,000 cavalry are roaring south, and in the rear, the main force of the Ninth Army, the 13th Infantry Division, is about 15,000 men.

On the flanks of the 13th Infantry Division, there were about 14,000 cavalry of the cavalry corps!

Most of the castles in the south were also garrisoned by nearly 1,000 troops, and near the Great Wall in the further south, the first corps consisted of a main infantry division and two reserve divisions sent by China to reinforce the battle.

This First Corps is not an inherent establishment of the military, but a temporary establishment, a temporary establishment specially set up for this campaign, and it is also a temporary establishment within the Ninth Army, and it is not an official number.

Just like the cavalry corps, it is directly under the command of the Ninth Army, and its troops are also drawn from various departments under the jurisdiction of the Ninth Army, and the commander of its first corps is also the commander of the Eighth Infantry Division, the main force of the department.

The corps model, which is also an attempt made by the Tang Army in recent years, is similar to the temporary brigade and temporary division in the early years, which are all specially set up for a certain campaign and belong to the temporary establishment directly under the army.

Although the number of troops under its jurisdiction may not be large, no matter how many troops it has under its jurisdiction, its task is to be responsible for the combat mission in a certain direction and region, but all the troops that enter the area to fight are under the jurisdiction of the army.

In this way, it may also lead to the fact that in wartime, the size of a certain army will become very large, such as the Ninth Army, which now has three main divisions, seven reserve divisions, two artillery brigades, two cavalry divisions, and seven cavalry regiments, and at the same time, the military headquarters also has professional auxiliary units such as the engineering regiment, the Zhouqiao regiment, and the military medical regiment.

The total strength of the above-mentioned divisions was more than 90,000 men, which was quite a huge number, and according to the model of field armies in the early years, these troops were organized into three armies.

Moreover, in addition to the active troops, even more than a dozen transport regiments belonging to the Logistics Department are now under the command of the Ninth Army, and the total number of civilians in these transport regiments has reached 30,000.

In this way, the total number of active soldiers and civilians under the command of the Ninth Army has reached 120,000.

With such a large scale of troops, although the military headquarters of the Ninth Army is fully functional, and the staff team alone has dozens of people, it is difficult to directly command the various units.

So, there's the Corps mode!

The cavalry corps and the first corps are independent corps.

Deng Xide led the main force of the Ninth Army Headquarters to the south, the First Corps was on standby on the edge of the Great Wall, and the Cavalry Corps was wandering near the main force of the Ninth Army Headquarters.

As for the Tatars, Altan Khan led them all the way south, then to South Limburg, and stopped!

When the fourth commander of South Limburg, Major Pan Deyue, saw the tens of thousands of cavalry pressed by the black outside, his mouth was half open, and he didn't come back to his senses for a long time, at this time a captain beside him scolded: "Damn, these Tatars see us as bullying, every time they come to beat us South Limburg, this is the fourth time!" ”

Pan Deyue also came back to his senses at this time, showing a wry smile: "Although we are in the key position of South Limburg, it happens to be in this canyon, this is the Great Wall to the south, and it is a flat river to the west and north, if I am a Tatar and want to cut off our supply line, I will also choose to fight here!" ”

When he said this, Pan Deyue didn't know whether to say that he was unlucky or lucky.

Before coming to South Limburg as commander, he was a captain of the 13th Infantry Regiment, with the rank of captain, and was promoted to major because of his meritorious service in escorting supplies several times and killing and wounding many Tatars, crossing a threshold that many lieutenants could hardly cross in their lifetimes.

But after being promoted to major, the boss was to transfer him to South Limburg as a commander!

What kind of place is South Limburg, it has been attacked by the Tatars three times before and after! What's more critical is that it is unfortunate that it has been breached every time.

After the city was breached, most of the soldiers defending the city were in a catastrophe, the first time it was attacked, the first commander of Nanlimburg, Cao Guangtao, had a good life, and fled with the remnants of the army, and then came back with reinforcements, but when the counterattack, he was injured, and the injury was not light, so he was sent to the Great Wall for treatment.

The second and third commanders were particularly unlucky, both of them died on the spot, and they didn't even have a chance to be injured.

In the past few months, the soldiers stationed in Nanlimburg have changed one after another, whether they are soldiers or officers, and now the soldiers stationed in Nanlimburg have been found out from the beginning of the soldiers stationed in Nanlimburg!

Not a single one!

Of course, the Tatars were not much better, and that time it was not several times the number of casualties to be able to conquer South Limburg!

A small Nanlimburg, I don't know that the corpses of Tatars and Tang Army soldiers are buried, and sometimes, you can smell blood under the city!