After the end of the Second World War, the world pattern was basically determined, the United States as a warlike country, such a peace made him feel very uncomfortable, some restless, has launched a lot of wars, such as the Korean War, the Vietnam War, Israel and Afghanistan and other countries have the figure of the United States army, of which the most headache for the United States army is the war with Vietnam, this war that has not been fought for 20 years, not only caused the United States to lose a lot of soldiers, but also really let the United States lose a face in the world.
The Vietnamese army knows that it cannot be tough with the US army, so it directly avoids the hard-hitting battle with the US army and adopts a lot of guerrilla warfare, including tunnel warfare and bamboo signing formations. At the outbreak of the Vietnam War, the Vietnamese army built the "Cu Chi Tunnel", which has a very narrow opening but a lot of underground. At that time, Vietnam was very turbulent, and the civil war contradictions were becoming more and more intense, and the United States directly sent troops to invade Vietnam under the pretext of helping to quell the civil unrest.
However, Vietnam's topography is very unique, there is a lot of vegetation, and it is very lush, and the territory of Vietnam is mostly mountainous, and many U.S. army weapons are not suitable for use in this terrain. So the United States took the method of sprinkling leaf dead into the woodland, and the trees and vegetation quickly withered, so the Vietnamese army lost its best cover and could only hide underground and fight with the American army. This kind of dodging and cat combat method was used by our army during the War of Resistance Against Japanese Aggression in our country, which is one of the typical representative combat methods of guerrilla warfare, and the results achieved are also very remarkable.
The entrance to the Cu Chi Tunnel is very narrow, each time can only be a person creeping in, and in the appearance it looks no different from the hole dug by an animal, but the more you go inside, the larger the space, the fork is also very much, there are many residences inside, medical, educational, training grounds and other venues are also readily available, a total of three floors high, and the width reaches a terrifying 250 kilometers, just like a large underground city, the designer's brain hole is simply amazing.
Once the U.S. army entered the cave entrance, the Vietnamese at each fork would be aware of it and would give it a blow in the head. The U.S. military has also thought of attacking with poison gas, but there are defense gates at each fork, so poison gas bombs cannot play any role. Although the tunnel is dark and damp inside, it is large in space and can accommodate a lot of people, and when fighting, because it is guerrilla warfare, it will not stay in it for a lot of people, and more positions are still outside, so this Cu Chi tunnel is very well preserved. And this kind of guerrilla warfare is also one of the most important ways to defeat the U.S. army, and the Vietnamese army has blocked the United States for 20 years in this way, which really makes the U.S. army lose face.