After the news of Li Xuanqing's western tour of Anxi was transmitted by Wan Yi to all departments, all the main corps departments received the news one after another, but Tuoba Siji and Hammud, who were on the northern front, still did not receive it at this time, and since they were taken from Juliu City, they plunged headlong into the desert in the northwest, and almost lost all contact with the command except for the occasional specific news from Xuanyingwei. However, although the two did not receive news from the rear, they made rapid progress along the way, because Tingzhou to the northwest basically did not belong to the core area of the Anxi Uighurs, although this generation of oases and rivers are dense, but the proportion of deserts is gradually increasing, almost every oasis is surrounded by deserts, and the supply of water for marching in this area has become the biggest problem for the army. If it weren't for the fact that Hammud's Uighur identity was able to deal with these scattered Uighur tribes, and that the Xuanying Guard was still partially arranged in this generation, the two armies combined with 70,000 or 80,000 horses would have almost no room for survival. But after more than half a month of rapid marching and continuous fighting, their northern marching corps has achieved a series of results, starting from Juliu City, along the ancient silk road to take Zhangbao Hand Capture, Wuzai Hand Capture and Qinghai Town, horseshoe caused to walk all over the Baiyang River, Ye River and other river basins, the surrounding large and small dozens of tribes all down, strong army so that these tribes almost have no power to fight back. And as Tuoba Siji raised the battle flag of the Tang Dynasty, the distant central empire was gradually awakened from the distant and vague memories of these tribes. A large part of the tribes in these regions are not actually Uighurs, but the descendants of various tribes and tribes in the Western Regions, relatively speaking, they still inherit the strength of the Han and Tang Dynasties in the memory of their own tribes, so after seeing the banner of the Tang Dynasty and Tang Yan being brought back by these powerful armies from the outside world, they have new expectations for the Tang Dynasty, and some tribes even sent their own children to ask to join the Tiance Army, and even took the initiative to act as a guide to quickly capture the Northern Advance Corps from Yehe to Wusu, That is, the famous Heishui River Basin in the northwest. Usu was the strategic point of the Northern Expedition, as further west was Huangcaobo, a famous lake in the northwest, which housed the largest Uighur military force on the northern frontier and was the main force defending the Twin Rivers Governorate, which had previously served as the Uighurs' frontline base against the northern Turgish, or Qarluq. The Uighur soldiers who had been defeated and scattered also brought the news to the Uighur camp in the Shuanghe Prefecture, so according to the news from the guide and Xuan Yingwei, the Uighurs took the initiative to move their main forces to the Heishui River, preparing to use the complex desert terrain and river water supply around the Heishui River to cut off the path of the Northern Advance Corps. Therefore, Hammoud and Tuobasji decided to lead an army to raid Usu.

However, what made the two dumbfounded was that when they arrived at the Heishui River, they found that the Uighur army in Wusu had already been prepared, and it was clear that reinforcements from the Shuanghe Governor's Mansion had also arrived in Wusu, so the raid could no longer be continued.

"Since you can't raid by surprise, then attack, anyway, the main force of the Shuanghe Governor's Mansion should all be in Wusu City, so it's okay, we can rely on the advantage of cavalry to quickly pacify the entire Shuanghe, and then you and I will divide our troops to the south and cut off the entire Anxi Uighur passage from the north." Tuobas smiled coldly at the fortified city, and immediately sent troops to attack the city after consulting with Hammud for a while. Because it is an assault force, there is no formed artillery to join the entire Northern Advance Corps, and the cavalry artillery of the two cavalry corps adds up to less than thirty mortars, and the shells have also been consumed before, and the most terrible thing is that the Uighur Corps has just changed its outfit, and many soldiers can only gain extremely limited experience in the use of rifles through a few previous battles, and as for more complex tactical tactics, there is no time to learn at all, and many soldiers are still used to wielding cavalry scimitars to play assault charges before, Therefore, after the two men discussed, the two corps were simply mixed in the Heishui River, the two corps were broken up, and the veterans were used to bring in the new recruits of the Uighur legion in order to quickly integrate the combat forces, and with the support of Hammud, Tuoba Siji decided to use siege warfare to gain more experience for the Uighur soldiers. Therefore, the Uighur army in the city saw the strangest scene of their lives, after the cavalry troops of 70,000 or 80,000 people arrived at the city, all dismounted, and all the soldiers began to urgently reorganize according to the method urgently discussed by the two commanders. This obviously temporary method made the defenders in the city think that the opportunity to pick up the bargain had arrived, so on the first day the two sides had a fierce battle outside the city, but to their great disappointment, Tuoba Siji was obviously prepared, and all the reorganization was taken over by him, and Hammoud took the veteran soldiers to meet the battle outside the camp, this battle gave all the tactics of the Uighur army the most intuitive battlefield experience, and the rifle in his hand turned out to be so powerful. The combat power of the 5,000-strong reserve force made the opponent's cavalry of more than 20,000 people unable to move. This kind of bullet after bullet shot can knock down the opponent at a distance of more than 100 zhang, and for such a huge combat target as the cavalry, almost every bullet can hit a target, the whole battlefield is people on their backs, countless Uighur cavalry are put down, people neighing and shouting all over the battlefield. Moreover, the scattered arrangement of the trenches of the Tiance army also made the Uighur cavalry who were lucky enough to rush up seem a little confused, and the veterans of Tuoba Siji's corps were obviously very knowledgeable about the jagged trenches, and were able to dig out this kind of position like a sawtooth fishing net in a hurry, so that those cavalry who rushed up would also face endless fire in the following directions, and soon all of them were killed on the spot.

"General Ha, this is one of the tactics of the Tiance Army's positional warfare summed up by the emperor." The corpses scattered all over the ground after the Uighur army was repulsed obviously shocked Hamoud, who was acting as the commander of this kind of positional warfare for the first time, so there was still a hint of excitement on his face when Tuoba Siji spoke, and in the face of the new generation of tactics, Hammoud was indeed similar to a new soldier. But he quickly understood the meaning of Tuoba Siji's words, and was immediately shocked: "Does General Tuoba mean that this is a tactic summed up by His Majesty the Emperor?" ”

Tuoba Siji nodded, and said with a hint of pride and sincere admiration: "You may not understand, but the Tiance Army's personnel training methods, instructions for the use of baggage weapons, and the innovation of this most profound tactical method are almost all the complete regulations and regulations that the emperor first proposed and wrote. Our generals, including the marshal, are actually the executors of these tactics and tactics, and the emperor is the soul of the Tiance Army. When you meet the emperor in the future, you will understand that the emperor of the Tang Dynasty is not only an emperor, but also a saint through the ages. ”

Looking at Tuoba Siji's face, Hammoud nodded silently, full of curiosity about this Tang ruler he had never met. And under his leadership, the follow-up reorganization became faster, and the soldiers of the Uighur Corps let go of their inherent thoughts after seeing all this with their own eyes, and began to follow these partners assigned around them to learn how to give full play to the power of the weapons in their hands and how to use reasonable tactics when attacking and defending. Begin to truly see them as one of them.

The three days of reintegration training allowed the two units to begin to speed up the integration, although it was impossible to learn such complex tactics in three days, but Tuoba Siji and Hammoud did not expect this, for these two people, the real integration still needs the baptism of the battlefield. Therefore, as soon as the establishment was basically settled, the newly formed troops were put into the battlefield and began to carry out siege warfare. Although the cavalry artillery did not have many shells, there were enough explosives packs and blasting canisters, which was almost a necessary step for the siege, so when the mortar fire sounded, a dozen demomen began to use this rare artillery cover to quickly rush towards the city gate.

"The striker executes the cover shot." As the Demoman advances, Topas immediately orders the front troops to open fire and cover the Demoman's approach to the city gates. Because mortars could not be compared to field artillery, and although the rate of fire was fast, there was not much cover due to the problem of shells, so as long as the Uighurs persisted, the troops on the towers were still able to detect the Demomen in time and use their crossbows to effectively kill them as they approached the walls. Countless soldiers of the Tiance Army carried rifles to kill the Uighur soldiers who dared to take the lead on the tower, and the bullets drilled large holes in the earthen walls, and the Uighur soldiers were quickly killed by these bullets, and the blood and corpses turned the walls of the earthen city into a Shura field.

Seeing that the Demoman was getting closer and closer to the city wall, Hammoud, who was at the forefront of the city, began to order the assault battalion in front to be on guard, and patted several soldiers of the same clan around him to tell them to remember to follow the Han brothers around him and follow their orders. Because street fighting is more difficult to fight than attacking fortifications, and attacking battles with the support of demomen and artillery hardly takes much effort, the key to consideration is actually how the demomen approach the tactical coordination of demolition and artillery cover, but the street fighting tests how the soldiers on the front line rely on small teams to advance and destroy the enemy layer by layer in an unfamiliar environment, so Hammoud's face became extremely serious.

When the Demoman arrived near the gates, he placed one blaster after another and immediately detonated them, and he himself began to rely on the walls to quickly evacuate. Only a loud bang was heard, and the city gates and walls of Tucheng could not withstand such a powerful explosion at all, and they were directly blown over, and the city gate was even directly washed into the air by the shock wave. Seeing that the gap was in front of him, Hammoud immediately gave the order to attack. The assault battalion immediately attacked, and countless soldiers of the Tiance Army began to rush away, and the street fighting officially began from this moment. Unlike Tuoba Siji, Hammoud took his own soldiers to quickly climb the bombed city wall to observe the progress of the war, and constantly mobilized the rear troops to come forward to support, although it was the first time to command the street battle, but he deserved to be a famous general of the Gaochang Uighurs, and his learning ability was very good, coupled with his own meticulous temperament made his command more and more strict, and the defenders in the city had little room to fight back in front of the strong firepower and the Tiance army, which was more and more easy to fight. Originally, it was able to rely on the advantage of the terrain to cause trouble for the Tiance army, but under the dispatch of Hammud, it also relied on firepower and tactics to make up for it, and the whole battle was in a one-sided state. Relying on this rare battle, the soldiers of the Uighur Corps were also tempered to the maximum under the baptism of blood and fire, and the tacit understanding with the Han soldiers around them became better and better.

The fierce street fighting lasted for three hours, and by the time the main Uighur army was broken up in the street fighting, and the remaining small forces were ready to abandon the city and flee, Tuobas, who had already prepared for the retreat, continued to wait for Lao to send troops in pursuit, and the cavalry assault speed of the Tiance army after getting on the horse was not inferior to these Uighur troops who had broken their courage, and the new generation of medium formal rifles with five rounds of reloading and reloading made the musket a weapon that could continue to fight on horseback, so this pursuit frightened all the Uighur soldiersThe almost endless bullets of the opponent made it impossible for anyone to escape this curse, and they were killed one after another in the way of escape.

However, at this time, Tuoba Siji and Hammud had no intention of paying attention to these, and after taking Wusu, the entire Heishui River valley was under their own control, and more than 70,000 cavalry troops continued to sweep this oasis area more than 300 miles long from north to south in the following three days, and with the cooperation of the locals, they quickly suppressed the sporadic Anxi Uighur army and the rebellion of a few local tribes, and completely controlled the area.

"Immediately send someone to contact Xuan Yingwei and ask them to send a good news to the commander and the headquarters, and my northern marching corps successfully took the Heishui River to annihilate the main force of the Uighur army of the Shuanghe Governor's Mansion, and the front of the troops is directed at Huangcaobo." Immediately after stabilizing the situation in Usu for a while, Tuobas sent people to inform the rear, and at the same time he and Hammoud immediately led an army to attack and prepare to cross the desert in front of them and enter Huangcaobo, and take this base camp in the northern part of the Anxi Uighurs.

At about the same time, the Seventh Corps, the vanguard of the Western Expeditionary Army, also sent troops to attack Kupila again after being stagnant for more than half a month, because Gao Siji had already found the biggest water source problem for the desert march. Although it was only confined to this desert, this method was adopted by the Ministry of Water Resources and Environmental Protection when it was later transmitted to the rear and became a powerful tool for the future management of the Anxi Desert. At about the same time, Li Xuanqing got off the bus at the administrative office in Hexi Province and began to discuss the same topic with Zhang Quanfu.