The battle to relieve the siege of the Bobai area began before the arrival of the main forces.

The vanguard battalion of the Qiongzhou Brigade pressed from the front, forcing the enemy to abandon a small number of outposts, and the vanguard battalion and the local Ming army touched the enemy's main defensive zone in three days.

The terrain on both sides of the Nanliu River is a hilly area with a width of 7 km to 20 km, with the county town of Bobai occupying the largest flat land in the basin, and the outer part is a mountainous area.

The Green Battalion relied on the hills and spread out the camp made of earth and wood.

To attack these camps, the Qiongzhou brigade unloaded 12-pounder guns and heavy howitzers.

The field artillery lost the ability to maneuver quickly because the official road along the Nanliu River was too curved for the 12-pounder gun to turn on such a road. The artillery could only untie the front car, and the heavy artillery could be moved to a suitable position by pulling the shoulders and dragging the horses.

When the back lane is not outflanked, the Green Battalion can usually maintain their fighting spirit. The enemy soldiers condescendingly fired arquebuses and light artillery, causing a lot of trouble for the attacking troops. On the right bank of the Nanliu River, where the terrain was more dangerous, the Tatars built three forts to control the surface of the river to block the logistics fleet of the coalition forces that needed to pull fiber during the dry season.

The commander of the Bobai enemy army was Yang Jie, the commander of the Green Battalion.

Yang Jieshan, a native of Shanxi, served as deputy commander-in-chief in the early years of Shunzhi. In that year, he led 3,000 Shanxi green battalion soldiers to southern Anhui, preparing to reinforce Li Chengdong in Guangdong, which coincided with Jin Shenghuan's rebellion. It was this northern green battalion that temporarily walked to the junction of Anhui and Jiangxi that prevented Jin Shenghuan and Wang Deren from entering the south of the Yangtze River by taking advantage of the initial rapid momentum. Then, Yang Jiebu acted as a vanguard with the Tatars' southern expeditionary army, and made great achievements in Jiangxi, slaughtering several large cities such as Jiujiang and Nanchang.

Then Yang Jie went to work in Fujian, Zhejiang, Huguang, and Jiangnan, and was promoted to the governor of Lufeng step by step, and his promotion battalion was recruited in northern Anhui and northern Jiangsu over the years, and there were 4,000 soldiers with him this time.

There were about 7,000 enemy troops under Bobai City, most of them located in the encirclement outside Bobai City, and more than 2,000 troops were blocking the hills and batteries in the river valley area.

The Qiongzhou Brigade attacked in turn with two battalions on the front to attract the attention of the enemy.

The rifle is the ruler of the battlefield, and when carrying a certain amount of ammunition, the rifle is the weapon with the highest projection efficiency. The combat flexibility of the bayonet rifle and rifled gun units was much higher than that of the mixed spear and arquebus units, and the infantry from Hainan Island boldly penetrated under this terrain, occupied the flank ridge line, infiltrated the rear, bombarded the enemy's positions with howitzers, and cut off the enemy's hilltop positions and riverbank batteries from the rear.

The soldiers from the north were too afraid to be surrounded in the unfamiliar mountainous area, and one after another the green battalion soldiers at the head of the battalion abandoned their positions and fled to the rear.

When the 12-pounder field gun was connected with Bobai's city defense artillery in range, Yang Jie burned the camp outside the city and retreated into the Nanliujiang valley in the rear.

The troops who broke the siege joined forces with the defenders of Bobai County, and Xie Yuanbian, the governor of Guangxi, who had been surrounded for half a year, saw the light of day.

The coalition army immediately set up a military station line in Bobai County, because it was the governor's station, the Bobai fortress had a lot of materials in reserve, and it was even enough to relieve the siege for a long time.

The baggage flotilla remained in the county town of Bobai for the time being, and the main force continued to attack forward, the sailors on the sampan thwarted several enemy attacks by fire and ships, and the infantry penetrated the ravines as before, seizing the hills on the flanks of the enemy troops, and setting up howitzers to bombard the enemy camps.

Six-pounder and twelve-pounder guns, 5.5-inch howitzers, many times it was impossible not only to advance with a full artillery system with a forward vehicle, but even to advance with a whole gun. The sappers made gun carriage slipways and twin wheels, removed the gun shafts of the guns, and scattered them for transport. There was a water distance of more than 40 kilometers from Bobai to Yulin, and the main forces advanced firmly and slowly.

Zhong Wenxin drew out one of the most elite battalions, equipped with mountain artillery, and advanced eastward, quietly leaving the Nanliujiang Valley.

The most critical part of the march was the mountain artillery, which was attached to the battle.

All the weapons of the mountain artillery company can be disassembled and transported by mules and horses, and at the same time, it is equipped with a mountain forging ironshop suitable for horseback transportation, and the blacksmith shop is the source of the combat effectiveness of the artillery unit in continuous combat.

The interspersed roads are hidden in the dense forests of the river valleys, and during the rainy season, many sections of the road are non-existent, only to be re-revealed during the dry season. The upper reaches of the rivers along the route have areas where migration can be carried during this season, and only the local army can figure out these complicated situations.

In Luchuan County, the staff team stationed by the Joint Logistics Department has been waiting for a long time. Luchuan County was under the jurisdiction of Zhang Xiaoqi, the governor of Guangdong, and it was the defense area of Cao Dahao and other units of the Ming army who withdrew from the southwest of Jiangxi.

The county seat is located in the upper reaches of the Jiuzhou River in Lianjiang Prefecture, and the transport ships can reach the city directly during the high water period. For this operation, the Joint Logistics Department had previously stockpiled a part of the supplies.

The other defense units in Guangdong mobilized most of their forces to devote themselves to the battlefield in the Pearl River Delta, and Luchuan County was close to the front line of the Guangxi Theater, so there were not many troops transferred to the Pearl River.

The Jiangxi army did not live up to the expectations of the coalition command, and in order to cooperate with this interspersed operation, Lu Chuan mobilized 1,800 soldiers and 1,200 people, which greatly exceeded the plan.

Although most of the soldiers of the Jiangxi army are not out of production in normal times, in the past ten years, the defense army has always maintained a certain amount of training in the agricultural slack season, and the backbone force is not lacking in veterans who fought in the Jiangxi battlefield in those years, and the combat effectiveness of independent combat is not inferior to that of ordinary green camp city guards.

The interspersed detachment rested for a short time outside the county seat, and the local soldiers and civilians prepared dry rations for the detachment, and from Luchuan onwards, the logistics of this reinforced battalion-level interspersed detachment were taken over by the Guangdong side.

The lieutenant colonel in command of this coalition force observes his allies.

The territory of the Gan army is located in the mountains between the two theaters of Gaolei and Qinlian, and it has never been sacked by the enemy in several battles to defend Haibei, and its vitality has recovered relatively well.

Several battles ended in the Ming army, and the Jiangxi army was open to chase and kill the green battalion soldiers every time, and in the past 10 years, small victories have slowly accumulated into big victories, and the victory has given this army relatively strong self-confidence and high morale.

The equipment of the Gan army was similar to that of other Ming armies, with a small number of elite soldiers armed with flintlock pistols and rifled guns.

The bayonet is less consumable than a flintlock rifle, the bayonet is easily damaged, but it is difficult to replenish.

With or without bayonets, Ming soldiers were more accustomed to carrying a lancet on their backs.

More than half of the soldiers were armed with arquebuses, including straight-to-hold arquebuses that had been eliminated by the Union Army, and there were also close-to-cheek shooting bird guns handed down from the Green Battalion and the Ming Army.

The supporting firepower is more than 20 light breech-splitting guns and breech-loading Furlong machines, weighing from 50 catties to more than 100 catties.

There were cannons in Luchuan County, but those relatively backward gun mounts and heavy cast iron cannon bodies were not suitable for maneuvering in the valley, so the Ming army did not bring them.

Judging from the strength of artillery, the equipment of the Ming army in front of him is not bad. At the latest, the green battalion soldiers were still equipped with tiger squat cannons and Francophone machines, and the Jiangxi army was stronger than them.

By the time it was time to open, the elite of the Jiangxi army would set off in the early stage, and these veterans armed with dozens of rifled guns would open the passage for the interspersed detachment.

From Luchuan to Beiliu, the march along the winding river canyon is more difficult.

The coalition army was then divided into two major parts, with the interspersed detachment and the main force of the Jiangxi army walking in front, part of the mobilized soldiers and the people as the rearguard, and the middle was connected by stragglers.

When the interspersed detachment walked out of the mountains and appeared under the city of Beiliu County, the distance gap between the guards and them had widened to one day.

Beiliu County was the supply base of the enemy's army, and the water grain of the Beiliu River was disembarked here, transported by pack horses and manpower through Tianmen Pass, and transported to the besieging army under the city of Yulin Prefecture.

When the Ming army in Guangxi abandoned Beiliu County, they evacuated the people here, demolished the city wall, and set fire to the whole city.

The Tatars re-rammed earth and erected a wooden city on the foundation of the original county seat, and tens of thousands of stone grain and other supplies were stored in the city.

The soldiers and horses defending Beiliu County were the Guangxi Green Battalion Maxiong Division, which had been attacked by the coalition forces many times, and before the main Tatar force reached Liangguang, Guangxi deployed three enemy troops along the Xijiang River. Guangxi Admiral Line Guo'an is in the middle, stationed in Xunzhou and Hengzhou; The general army of the right wing was stationed in Nanning; The left wing commander Ma Xiong was stationed in Wuzhou, and the green battalion soldiers drawn from the rest of the provinces were assigned to the three divisions.

In the past few years, the Maxiong Division has been severely damaged twice, almost completely wiped out once, and each time it has been rebuilt on the basis of veterans who have fled.

Every rebuilding means that combat effectiveness, weaponry, will to fight, and morale have taken a step down.

It was precisely because the combat effectiveness of the Ma Xiongbu was not very reliable that Jishiha would assign them the relatively simple task of defending the lines of communication.

There are about 800 defenders in Beiliu City, the city is located on the left bank of the Beiliu River (that is, the west bank), the river surface of the upper reaches of the county seat, the width is less than 100 meters, there are many shoals that can be migrated, interspersed with detachments across the river, and soon captured more than ten sampans of the enemy to transport grain.

The coalition forces took up positions at the ferry, and the main force immediately advanced to the city of Beiliu.

In the southeast of Beiliu City, there is a ridge line about 150 meters high, roughly along the direction of the river, and the interspersed detachment will set up a sortie position here, relying on the mountain ridge as the rear.

The enemy forces south of Tianmen Pass could be reinforced at any time, and there was no time to waste, so the interspersed detachment began to storm as soon as it arrived.

The infantry countered with platoon guns to suppress the fire from the city, and the artillery completed the assembly of six mountain guns, and advanced the artillery to a position 200 meters from the city wall in the rain of enemy bullets.

Ming soldiers carried hastily made improvised wooden ladders across the moats.

The firepower of the enemy's counterattack was very weak, and the heaviest weapons of the defenders of this green battalion were only a few large general cannons and tiger squat cannons, and there were very few bird gunners who dared to counterattack in front of the fire of the platoon guns. It's just that when the wooden ladder is on the city wall, the various messy things thrown down by the enemy army cause relatively dense casualties.

The lieutenant colonel promised the Ming army that after the city was broken, half of the captured property and population would be obtained by the Ming army, and this reward was not low.

Although it is only a temporary wooden city, Beiliu is the enemy's material transfer center, and it must not be poor. The population was also large, with more than 20,000 people pulling boats on the Beiliu River and another 5,000 people transporting on the mountain road between Yulin and Beiliu. The official road is non-stop day and night, both sides of the road are covered with the bones of the people, since the start of the war, more than 5,000 people have died on this road, and the Tianmen Pass has been restored to its original ancient name, the Ghost Gate Pass.

The coalition army did not surround the enemy, at the moment of breaking the city, the green battalion soldiers in the city opened the north gate, and poured out, the people blocked the road, the green battalion soldiers slashed with their knives, anything that blocked the road ahead, whether it was the people or the scattered Ming troops who blocked the block, could not stop the determination of this group of red-eyed guys to change the direction of attack.

The coalition forces first relied on ready-made fortifications to occupy positions and control 5,000 people in and around the city. Subsequently, 900 Ming troops were divided, and 2 mountain chasseur companies pursued forward, and the focus of the pursuit was not to kill the green battalion of the Ma Xiongbu who had fled, but to control the boats that were sailing on the Beiliu River.

The pursuing Ming army bypassed Rong County, pursued ships everywhere on the river, there were many tributaries on the Beiliu River, there were many boat households in the Ming army who were very familiar with the river, and under the guidance of the boat owners, the Ming army hid nearly 150 boats.

Transport units in the rear entered the city overnight, delivered enough combat materials, interspersed with detachments to concentrate ammunition in the city, set up blacksmiths, and recast shells and bullets of ill-caliber caliber.

Subsequently, the coalition army divided a group of 100 soldiers to escort the captured people, and retreated to the southeast with their own people.

In the afternoon of the same day, the chaspersers located in the direction of Tianmen Pass retreated in the direction of the city.

Unable to tolerate the cutting off of the grain route, about 5,000 troops crossed the pass and drove towards Beiliu County.

After observing the terrain of the county, the lieutenant colonel focused his defense on the ridge line southeast of the city, and all six guns were set up on the top of the mountain, leaving only the light artillery of the Ming army to support in Beiliu City.