For Dye Gan, this time he was slightly transferred by his uncle Sha Bo to accompany the army to the south, which can be regarded as unlucky. Pen? Interesting? Pavilion wWw. ｂiquge。 info was first defeated by Yang Guang personally commanded the Sui army outside the city of Bingzhou, losing nearly 10,000 soldiers and horses, and then when he followed the comeback of the cave Hezhen, he was ordered to be in danger, and was ordered by the cave to serve as the main general of the whole army who led the army to fight with the Sui army on the east road of Bingzhou, and had to lead the army to fight to the death with the Sui army, who would have thought that only after a few days, he tried his best to barely fight a draw with the Sui army, but suddenly got the military order from Dingzhou: the domestic affairs are urgent, and the Great Khan ordered the army to withdraw quickly, He had led the defenders of Dingzhou to withdraw to Guanwai first, and he wanted to try to go north, join up with the Yongyu Lu Department of the Western Route Army, and withdraw from Yanmen Pass to Guanwai.

Holding the military order issued by Gu Hezhen in his hand, the sweat soaked his back unconsciously, and his hands trembled involuntarily: Gu Hezhen said goodbye without saying goodbye, leaving him alone and more than 70,000 soldiers and horses outside the city of Bingzhou, isn't this a piece of fat sent to the mouth of the Sui army? The slightest mistake on your own will lead to the fate of the annihilation of the entire army.

The first thought that came to Dye Gan's mind was how to ensure that the more than 70,000 soldiers and horses were safely evacuated from the customs and that his father and son would not be suspicious of his uncle.

Undoubtedly, the army that Gu Hezhen instructed him before leaving to lead the army to the north, join up with the Yongyu Lu Department of the West Route Army, and withdraw from Yanmen Pass to the outside of the pass is the most secure option to protect the withdrawal of the whole army, however, the question is, since Gu Hezhen can design such a withdrawal path for himself, the other party can't guess it?

From the first encounter more than ten days ago, Dye Gan relied on his experience of leading the army to repeatedly confront the Sui army, and sensitively perceived that the general of the opposing army was by no means a busy person, even if it could not be compared with the famous Sui general Da Xi Changru who met in Zhoupan two years ago, if it was about the ability to make a decision on the battlefield and defeat the enemy, there was not much difference between the two, otherwise he would never be able to decisively turn defense into attack and kill himself in the case of being attacked on both sides of the state.

Since the main general of the other side can also guess that he will go north from Bingzhou and join the Western Route Army, it is difficult to guarantee that the Sui army will not set up an ambush in the middle of the road in advance, attack in front and back, and annihilate the 70,000 horses led by himself on the outskirts of Bingzhou.

It is different from two years ago when he was the vanguard of the whole army's southern expedition and was defeated by Daxi Changru, he has now lost the trust of his uncle Sha Bolu, to a certain extent, it can be said that he has made meritorious contributions, if he loses a group of 70,000 men and horses in the territory of the Sui Dynasty, then his father and son are afraid that there will be no day to turn over from now on.

After Ran Gan received the military order to withdraw the troops from the Guannai, he meditated on the map alone in the big tent of the Chinese army for a long time, and finally he came up with a method that was not a way to withdraw the army: divide the troops.

Before leading the army to the south, Ran Gan had an understanding of the military strength of the Sui army stationed near Bingzhou, and from the recent battles with the Sui army on the eastern front of Bingzhou, he also ordered the scouts in the army to roughly find out that the Sui army guarding the east of Bingzhou City totaled about 50,000 horses, which was 20,000 less than the 70,000 men he led. In addition to the 50,000 horses on the eastern front, the Sui army also had to divide its troops to defend the city of Bingzhou to resist the advance of Yongyu Lu's troops from the north road to Bingzhou, and the remaining mobile forces were extremely limited. In this situation, most of the commanders of the Sui army would choose to concentrate their superior forces, make a desperate bet, and set up an ambush on one road to block their own withdrawal, while they themselves could adopt the method of withdrawing their troops by separate routes, so as to avoid the fate of the entire army being wiped out in the pass as much as possible.

Moreover, this time, he was the vanguard general of the Eastern Route Army who was controlled by the cave and the commander of the army led the army to the south, and chose to divide the troops from the original road of Shacheng to retreat outside the pass, even if there was a mistake, it can also be blamed on the commander of the East Route Army afterwards, and he did not have to bear the responsibility of losing the division by himself, so why not?

The plan has been decided, Dye Gan immediately gathered the generals in the big tent, and ordered the deputy general of the battalion to lead 20,000 horses to pull out the camp one step in advance, take the east road of the city to the north, and meet with the army on the west road, choose to break through the Yanmen Pass, withdraw outside the pass, and he himself personally commanded the 50,000 troops, after the first road to the north to divert the attention of the opposing enemy, Fang Yan died down, withdrew to the direction of Dingzhou, bypassed Dingzhou City from the west, and chose to withdraw from the sand city.

The strategy of withdrawing the troops by a separate route that Ran Gan came up with after contemplation brought him unexpected good fortune: although the 50,000 army he led was blocked by a small group of Sui troops from the Eastern Front near Shacheng, it was not enough to stop the 50,000 army from withdrawing to Guanwai, and after only paying the price of a few hundred people, Ran Gan successfully led the 50,000 Turkic army to withdraw safely outside Guanwai.

Compared with his journey, the first 20,000 horses and horses who went straight north from Bingzhou to join the Western Route Army were not so lucky. On the day when Du Yan received Yang Guang's order for him to lead the army to cover up and kill the Turkic army from behind, he was just in time for the Turkic head to set off for the north with 20,000 horses all the way.

When Yang Guang saw that the Turks were really going north from Bingzhou, and wanted to take the pass from Yanmen Pass and withdraw to the outside of the pass, he was overjoyed and hurriedly ordered Zhou Shao to lead 20,000 Sui troops to kill from the side of the road, blocking the other party's way. Soon after the two sides fought in the middle of the road, Du Yan also led the pursuers to kill from behind, and the two Sui armies with a total of 50,000 horses surrounded the Turkic 20,000 horses to the death, and implemented a beautiful battle of annihilation.

When Yongyu Lu sent troops to rescue him after receiving the report, there were less than 3,000 Turkic troops left, and they escaped from the encirclement of the Sui army in embarrassment and rendezvous with the Western Route Army.

After the fierce battle between the two sides, it was not until the time of clearing the battlefield that Yang Guang suddenly realized that the Turkic army on this road that was almost completely annihilated on the road seemed to be far less than 70,000 horses.

When Yang Guang heard the news, he regretted it, but he had no choice but to send troops to stop Dyegan, so he had to hurriedly lead the two Sui armies and join the battle on the northern front.

After Yongyu Lu learned the news that Yanmen was closed and lost, he really didn't plan to withdraw the army and stop the siege of Bingzhou City, because Yongyu Lu had already agreed with his father Sha Bolu on the battle plan for the southern expedition before leading the army to the south, and knew that Sha Bolu personally led an army of 100,000 troops to garrison Baidaozhou, ready to meet the east and west roads at any time, in case of contingencies. In this case, even if a small group of Sui troops captured Yanmen Pass, there would be Father Khan outside the pass to help him take care of the back road, and the main purpose of his army was to take the state as soon as possible and expel Yang Guang from the state.

Therefore, after Yongyu Lu heard that the retreat route out of the pass was cut off by the Sui army, he not only did not order to return to attack Yanmen Pass, but instead ordered the three armies to strengthen the attack on Bingzhou, until his father Sha Boluo ordered the army of the Sui two roads to withdraw as soon as possible outside the pass, Yongyu Lu had to gather men and horses, and returned to storm Yanmen Pass.