In World War II, each division of the Japanese army had a Chinese character code, such as the 1st Division was "Yu", the 2nd Division was "Yong", and the 18th Division was "Ju", perhaps the code name of the 45th Division of the Japanese Army stationed in Longling was actually "Dragon".

The ancient name of Longling is Heishui Cage, and it is Ailao County in the Eastern Han Dynasty. Adjacent to Mangshi, the Jin-Burma Highway has just passed through. It is 70 kilometers away from Songshan in the east, about 100 kilometers away from Tengchong in the north, the mountains and mountains along the way are undulating, the terrain is dangerous, it is a place where soldiers must fight for since ancient times, and it is also the key point of the Yunnan-Burma Road, its strategic position is quite important.

After the Japanese army invaded western Yunnan, Longling County was the place where their heavy troops were assembled, and it was one of the six major garrison bases of the Japanese army in western Yunnan and northern Burma. The Japanese army built a large and permanent network of fortified fortifications on the high ground around Longling, which was very similar to Matsuyama. The city was based on commanding heights and houses, and every house had a fortress and every brick wall had a gun hole.

Since crossing the river, the troops commanded by Commander Huo of the right wing have fought bloody battles all the way to Qiaotou and Jiang Tho Street.

In order to save the northern front, the Japanese 56th Division could only send reinforcements to reinforce it. The intelligence department of the expeditionary force immediately reported the situation to the commander-in-chief: on the Tenglong Road, a Japanese reinforcement force of more than 2,000 people was rushing towards the bridgehead in Longling.

When the General Headquarters of the Expeditionary Force heard the news, they were very happy, because they knew that the main force of the Japanese army had been transferred to the battlefield in northern Burma, and the Japanese army only had more than 1,000 troops to hold Songshan, more than 1,000 troops to garrison Longling, and a small number of troops to guard the dam, Zhen'an Street, and Huangcaoba; The Japanese base camp of Mangshi now has only more than 1,000 troops, and Sakaguchi plans to increase troops at this time, and the strength of the Longling garrison is estimated to be more than 700 left.

Seeing that the time had come, the General Headquarters of the Expeditionary Force immediately ordered the 11th Army to cross the river with its divisions.

In only 3 days, Song Xilian's troops all crossed the turbulent Nujiang moat.

Song Xilian's 11th Group Army was 3 armies and 7 divisions, plus the attached artillery, engineers, and communications troops, about 100,000 troops, which was more than ten times the Japanese army in Songshan, Longling, Mangshi, Xiangda, and Pingga. The 56th Division, which had this absolute superiority in strength, should be more than enough.

General Song sent three ways and hit Longling and Mangshi with heavy punches. The three-way army was like three sharp swords that plunged directly into the important strongholds of the Japanese army, cutting off the long snake formation arranged by the Japanese army on the Yunnan-Burma Road. The troops, like tigers with wings, immediately formed an all-out attack on the Japanese army, encircling and suppressing them separately.

Longling is located in the Nu River, Longchuan River confluence of the flat dam, is located in the basin surrounded by peaks and mountains, although it does not have a section of the city wall, but its dangerous geographical location surrounded by mountains has been completely able to resist strong enemies, not to mention that it has Songshan in the north to block, south of the South Tianmen Gorge as an obstacle, the natural danger to defend the front and back, even if there is no impregnable city wall surrounding, it is more difficult to occupy the city.

Only more than 30 kilometers to the south of Longling is Mangshi. This is the base camp of the 56th Division of the Japanese Army, Longling with its dangerous position to guard the barrier of Mangshi, out of Mangshi and then south is Wan Town, from the defense of foreign invasion, Longling is the shield to protect Yunnan, and from the situation in northern Burma, this Longling has also become the barrier of the Japanese army to defend northern Burma.

In the Japanese defense system in western Yunnan, Longling, Songshan, and Pingga are three-legged, each other's horns, after Pingga was surrounded by the 76th Division, this balance went wrong, but Songshan has not been conquered by the expeditionary force for the time being, and Longling is still very strong.

Due to the close proximity of Longling to the Mangshi base camp, the Japanese Longling garrison did not have many troops, the original more than 1,000 troops, composed of the 2nd Artillery Brigade of the 56th Division, the main force of the Engineer Wing, the 113th Wing and the 2nd Brigade of the 29th Wing of the 2nd Division, with the captain of the Engineer Wing Xiaobao Zhongzuo as the commander.

This engineer captain gave full play to his engineering expertise and built the Longling fortifications as strong as the Songshan fortifications.

In the highlands around Longling, the strong fortress forms a bird's-eye view of Longling City, there are secret passages to communicate with each other in the corridor position around Longling, along the highway, near the ferry, there are all fortresses set up in the commanding heights of the city.

Longling City is fully armed.

Longling, a strategic location, will never be easily abandoned by the Japanese army.

In order to isolate Longling and cut off Songshan, after crossing the river, Song Xilian divided the main force of the 71st Army into two routes, all the way to Songshan, and all the way to Longling.

In order to coordinate the overall situation, the army commander Zhong Bin handed over the specific Longling City to the deputy army commander, General Chen Mingren, to carry out the whip.

This Chen Mingren is a native of Huangpu Phase 1, and Song Xilian is a native of Hunan Province, and has followed Song Xilian to fight in the south and north for many years, and he can be regarded as a fierce general.

Before the Nujiang attack order was issued, he began to study the situation in Longling, how to fight, he already had a clear mind: Longling is surrounded by lofty mountains, this is the first obstacle to break through Longling, and it is also the flank threat that the 71st Army must cut off.

General Chen planned to use the 87th Division as the northern route, and after crossing the river, he would quickly march from the northeast to Huangcaoba, and the 88th Division would use the southern route to quickly move from the southeast to the south after crossing the Nujiang River. Then gather troops to encircle Longling.

On June 6, the 260th Regiment of the vanguard of the 87th Division on the Northern Front captured Huangcaoba in one fell swoop, destroyed the bridge over Longchuan, cut off the Tenglong Road, and cut off the threat from the Tengchong direction to the right flank of the 71st Army.

On June 8, the 260th Regiment again captured the dam and Zhen'an Street, cutting off the road from Songshan to Longling.

This completely cut off the connection between the Lameng garrison and the Japanese army in the outside world, and Songshan became an isolated island.

What's even more gratifying is that when the 260th Regiment captured the dam, it served the Japanese army's munitions warehouse at the dam in one pot, and all the materials were used by our army, and this battle was fought beautifully! The 260th regiment made the first contribution this time.

The 264th Regiment, the main force of the 88th Division on the Southern Front, boldly advanced from Pingga Tianning Temple and Hedi Factory.

On June 7, the main force of the 88th Division occupied the line of Changlinggang, Steep Rock and Nantianmen. On the day that the 26th Regiment captured the dam, the 264th Regiment also took the opportunity to occupy the Fangma Bridge, cutting off the connection between Longling and Mangshi.

The 71st Army formed an encirclement posture against Longling.

The worries were completely lifted, and the war was smoothly advanced.

On June 8, the 71st Army had moved its military headquarters to Jianshan Temple on the outskirts of Longling City, and the command post of Song Xilian's 11th Army also entered Jianshan Temple.

Standing on the top of the mountain, the eagle dog general has an indescribable pleasure, the northern foot of Gaoligong Mountain is fighting fiercely, the bridgehead, Lengshuigou is inseparable, taking advantage of the main force of the Japanese army to the north, Longling troops are empty, the 11th Group Army has a pressure situation, and it is no longer a myth to quickly arrive here by surprise, it seems that the speed of occupying Longling is no longer a myth.