Menggong River Valley refers to the river valley between Nansha Duzha and Menggong in Jianbu Mountain, which is more than 120 kilometers long from north to south, and about 10 to 20 kilometers wide from east to west, originating from the Nangao River at the southern foot of Jianbu Mountain, runs through the river valley and joins the Menggong River in the south of the river valley.

After the capture of Shadujah, General Stilwell immediately made the decision to advance "at full speed to Ganmayin and Menggong", and issued a new combat order: the new 22nd Division was still attached to the chariot battalion and the heavy artillery regiment as the right corps, and advanced along the road to attack Ganmayin; The new 38th Division was ordered to be the left corps, along the east bank of the Nangao River and the west side of Kumang Mountain, to the south of Ganmayin and Menggong, to cut off the rear road of the Japanese invaders.

When the order came, the morale of all the front-line units was like a rainbow, and regardless of fatigue, they slaughtered Yingkaitang, Gan Mayin, and Meng Gong, killing the remnants of the enemy and defeating them one after another.

After the defeat in the Hukang River Valley, the 18th Division of the Japanese invaders was already greatly damaged.

After the defeat of Jianbu Mountain, Gaoluyang, and Shaduzha, the 18th Division of the Japanese invaders had run out of oil, and "the first-line squadron, including the squadron leader, generally had less than 30 people, or even only a dozen people. And almost all of these people are in a semi-sick state...... Supplies are also in a state of interruption. ”

However, on the Burmese side, the Japanese had a total of 10 divisions and 2 independent mixed brigades, the 18th Division was disabled, the 2nd Division, the 56th Division, and the 24th Independent Mixed Brigade...... At the end of the First Battle of Shaduzha, the Japanese reinforcements also rushed to the Menggong River Valley, giving the remnants of the 18th Division of the Japanese Invaders a chance to breathe.

After Lieutenant General Tanaka received reinforcements and reinforcements, he immediately took the 55th Wing, the 3rd Brigade of the 114th Wing, and the 21st Brigade of the Independent Artillery attached to the 146th Wing of the 56th Division to defend the important places such as Wala and Dalongyang on the east bank of the Nangao River, under the command of Shunji Aida, commander of the infantry regiment; The 56th Wing and the 3rd Wing of the 146th Wing with heavy artillery were stationed on the west bank of the Nangao River, and the important places such as Yingkaitang, Marakagao, and Sokadao were personally commanded by him, hoping to support them until the rainy season.

When the rainy season comes, the Hukang River Valley and the Menggong River Valley will become a Ze country, and at that time, the supply of the troops stationed in India will be difficult, and the war situation will be able to take a turn!

Of course, this is just wishful thinking on the part of Lieutenant General Tanaka and the Japanese invaders!

"In the bloody line of fire, in the smell of ammunition, we recaptured Da Luo, captured Meng Pass, and now we have captured Shadu, brothers, forward! Brothers......"

The high-pitched singing voice fluttered in the Menggong River Valley, the Hukang River Valley had been recaptured, the Jianbu Mountain Pass had been conquered, so many brothers' brothers had already paid with their lives and blood, what else could stop the soldiers from advancing?

The stubborn Japanese can't!

The wild rainy season in northern Myanmar can't either!

The officers and men of the New 22nd Division made a fierce attack all the way south along the road running through the river valley, capturing Wakang on 14 April, Valaja on 18 April, and Yingkaitang on 3 May.

"In the bloody line of fire, I recaptured Da Luo, captured Meng Pass, and now, we have conquered Maragau, brothers, go ahead! Brothers, move forward! Towards Gan Mayin, towards Meng Gong ......"

After a bloody battle, brothers continued to fall on the way forward, but the surviving brothers were still singing that high-pitched song and moving forward firmly...... Because, they firmly believe that this road will eventually lead to victory!

While the units of the New 22nd Division were struggling to advance south along the highway, the units of the New 38th Division never stopped attacking, capturing Gaoli, Dalongyang, Oxi, Wanan, and other places along the way.

At this point, the Japanese invaders were defeated and retreated, and could only struggle to support themselves in the southern part of the river valley.

In the meantime, the Japanese 53rd Division hurriedly came to the rescue, in a vain attempt to make a death struggle.

However, all in vain!

On 26 May, the 112th Regiment of the New 38th Division successfully attacked Xitong, an important town connecting Ganmayin and Menggong, leaving Ganmayin's enemy alone.

On 30 May, the new 22nd Division launched an attack on Martin Sekan, and the Japanese were forced to retreat south into the Ganmain fortification.

At this time, the "Wuhao" operation launched by the Japanese invaders had already failed, and the 14th, 30th, and 50th divisions of the National Revolutionary Army, which had been airlifted to India for defense, immediately joined the Burma battlefield, so that the operational plan of the Indian army to sweep the Mong Gong River valley while "attacking Myitkyina" could be implemented; In western Yunnan, the expeditionary force also crossed the Nu River on 11 May and officially launched a counteroffensive against western Yunnan...... At this point, the Japanese invaders entrenched in Yunnan and Burma were completely in a predicament.

On 10 June, the New 22nd Division officially launched an attack on the remnants of the enemy entrenched in Ganmayin, and at the same time, the main force of the New 38th Division also began to advance towards Meng Gong.

On the morning of June 16, Ganmain was conquered!

On June 25, Meng Gong was completely captured!

At this point, the Japanese invaders entrenched in the Mong Gong valley were completely cleared, and the roads to Myitkyina, Bhamo and Mandalay were completely opened.

While the officers and men of the New 22nd Division and the New 38th Division were fighting in the Mong Gong River Valley, the Sino-American mixed commando team sent by General Stilwell, under the leadership of Brigadier General Merrill, had already set out from Tekri and crossed the Kumang Mountains to launch a surprise attack on Myitkyina.

On the night of 16 May, the assault team arrived in the western suburbs of Myitkyina and captured the airport in the western suburbs in the early morning of the next day.

By the end of the battle in the Mong Gong Valley, the Sino-American mixed commandos were still fighting hard in Myitkyina, suffering heavy casualties among their units, but with little success.

However, the new 22nd and 38th Divisions never received an order to join the battle.

In June, the northern rains in Myanmar poured down, and the water of the Menggong River swelled, and the river surface that was only three or five meters wide in the dry season suddenly spread to two or three miles wide, and the turbidity waves on the river surface were monstrous.

Three days have passed since the battle of Menggong, Li Siwei entered Menggong City by car, accompanied only by Hu Dayan and the driver Chen Yisheng, and the station of the 66th Regiment was in the area west of the line from Xitong to Menggong.

Since Shadujah moved south, the 66th Regiment has been serving as the right column of the new 22nd Division, mainly to guard against the Japanese raids from the mountains west of the river valley on the Imphal side, and rarely encountered large Japanese troops, which disappointed the brothers in the regiment.

In this regard, Li Siwei had to comfort him with good words, after all, this was Shangfeng's arrangement.

Because the 66th Regiment suffered fewer casualties, it was arranged in the area west of the line from Xitong to Menggong after the Battle of Menggong, and continued to serve as the task of guarding the enemy in the southwest.

Li Siwei came to Menggong this time to attend a meeting at the division headquarters that had just moved into Menggong City.

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