In 1885, the Qing Dynasty was defeated in the Sino-French War, the French army occupied part of Cambodia, the Qing Dynasty signed the Sino-French New Covenant, formally renouncing the suzerainty over Vietnam, France established a French Federation in Vietnam, with the Franco-Siamese War, France occupied Laos, so that the three countries formed the original French Federation.
At the end of World War II, although the three countries fought for independence, Vietnam, as the strongest of the three countries, wanted to restore the federation, so it proposed a established, prosperous and powerful Federation of Vietnam, Laos and Cambodia, Laos chose to be pro-Vietnamese, and Cambodia was our ally.
China, the Soviet Union, and the United States are more like three-legged standoffs, but in 1971, the United States began to visit China, and Sino-US relations were normalized, which was not good news for the Soviet Union, and in order to be able to contain our country, the Soviet Union signed a military assistance treaty with Vietnam to support Vietnam's expansion.
In 1978, Vietnam constantly provoked armed forces on our border, our country warned many times, but Vietnam turned a blind eye, and at the end of the year invaded our ally Cambodia, this naked hegemonism, completely threatened our country, on February 17, 1979, our army gathered 7 armies, 22 divisions and 360,000 people gathered in Guangxi, Yunnan and China-Vietnam border, participating in the war militia, more than 700,000 civilian workers.
At 4:00 a.m., our army launched a counterattack, 560,000 troops, on a front of about 500 kilometers, the strength of our army on the eastern front all the way to conquer Gaoping, Tongdeng, the western front troops conquered Lao Jie, Citrus Pond, to Vietnamese territory of 20 to 50 kilometers, when the eastern front advanced to Lang Son, our country has reached the purpose of punishment, began to retreat.
According to the "Summary of the Self-Defense Counterattack Against Vietnam", from February 17 to 27, our army annihilated 15,000 enemy troops, and from February 28 to March 16, our army annihilated 37,000 Vietnamese troops, which gave a painful lesson to the Vietnamese army with a total of 100,000.
However, the war was not smooth sailing, our army also had casualties, and it is normal to be captured from ancient times to the present, so who is the "supreme general" of our army who has been captured?
After the end of the Battle of Lang Son, the 448th Regiment of the 150th Division of our army was ordered to begin to retreat to the motherland, but the thief-hearted Vietnamese army used the tactics of the main infantry division to carry out mobile operations and counterattack, so the 2nd Battalion of the 448th Regiment of our army was responsible for covering the withdrawal of the army after the break.
However, the Vietnamese offensive was too fierce, causing certain casualties to our army, during the counterattack, the eight companies led by Feng Zengmin were scattered by the Vietnamese army, and 229 people were trapped in the Vietnamese encirclement line.
After the end of the war, Feng Zengmin was sent back to China when he exchanged prisoners of war, he was sent to a military court, sentenced to 10 years in prison, his actions were criticized a lot, some people asked him why he did not resist, with the combat effectiveness of the 8th Company at that time, he would be able to kill a way.
Feng Zengmin only said four words "helpless move", after all, Feng Zengmin had to consider not only him alone, but the lives of 229 people.