The airburst bomb thing...... It's easy to use, but it's not easy to use.

The reason also starts from the principle of "air explosion...... As the name suggests, an airburst means to explode in the air...... In fact, as early as before and after World War II, many military experts discovered this characteristic of artillery shells, that is, the explosion of artillery shells when they reach the air above the target is the greatest lethality to the enemy, and this principle is the same as the terrifying lethality of a cannon fire in the woods and bamboo forests.

This principle is very simple, but it is not easy to achieve "air explosion".

Because the shell is not an intelligent thing, it must touch the ground and trigger the fuse before exploding, it is impossible to explode automatically in the air, and if it explodes early, it will not work...... The trajectory of the shell is parabola, and if it is to explode early, even just a little earlier, it may explode on your own head.

So military experts have thought of a lot of ways, such as using probes, such as using time fuzes to calculate the landing time...... But these are not very haode solutions, for example, we are using time fuzes now, and then detonate a little earlier after calculating the time...... To do this, it is actually difficult, first of all, we must have very detailed data, that is, the accurate time when the shell hits the target, which we did by relying on previous preparations, so we have the effect of using air-burst shells this time.

However, even if two shells fired by the same cannon with the same parameters cannot hit the same place, sometimes there will be a large deviation between the landing time and the trajectory...... This is due to the long distance of long-range artillery fire, and in the process of such a long distance of the movement of the shell, the humidity of the air, the direction of the wind, the wind atmosphere, etc., all randomly affect the trajectory of the shell.

Thereupon. The use of time fuses also turned into an unreliable airburst...... Maybe one or two will work. And it had to be not too far from the time interval at the time of the test launch. The longer the time passes, the more likely it is that the wind direction will change, the more unreliable the time, and the more difficult it will be for the airburst bomb to achieve the desired effect.

Of course, this problem was later solved by putting an electronic altimeter in every shell...... In this way, the shell will explode accurately over the target, but this undoubtedly increases the cost of the shell to a large extent...... As soon as these shells are shot, they are often hundreds or thousands, and we are still a poor country now, so naturally we can't afford to withstand such a toss, and most of our country's equipment is based on the Soviet-style route. The idea of equipment is that a certain quality can be sacrificed for the sake of quantity...... As a result, this kind of airburst bomb equipped with an electronic altimeter could not be equipped in large quantities in this era.

As a result, our army's air-burst bombs quickly turned into ordinary grenades...... The Vietnamese army also felt this change, and immediately accelerated the pace of attacking our army's high ground, and at the same time, the Vietnamese army's artillery also joined the battle, so the artillery fire of both sides immediately blew up the front and back of the 518.6 high ground into chaos, and soon it was impossible to distinguish which were the Vietnamese army's shells and which were our army's shells.

In fact, this is also a means of Vietnamese artillery...... Only by disturbing the line of sight of our troops with artillery fire, so that the artillery observers of our army could not distinguish between enemy and enemy shells...... This prevented the artillery observers from directing the artillery to fire airburst shells at the charging Vietnamese troops again.

So, after a while, the air was full of shells, shrapnel was flying everywhere, and the thick smell of gunpowder smoke in the air almost made people breathless.

That's the downside of the 518.6 Highlands...... We are a positive slope for the Vietnamese artillery. That is to say, all the shells and firepower of the Vietnamese army are a threat to us...... This is the same as when we attacked the 518.6 heights, the mortars and recoilless guns of the Vietnamese army. Even all kinds of machine guns can easily hit our positions, threatening the safety of our soldiers.

What's more...... We can't retreat to the top of the hill or to the anti-slope to avoid bombs like the Vietnamese army. The reason is very simple, the area of the hilltop position is too small to accommodate so many of us...... If you insist on squeezing up, you will only gather into a pile and become a very target of the Vietnamese army.

As for the anticline...... We are now actually surrounded by the Vietnamese army, and there are Vietnamese attacks on both sides, which means that neither side will be an anticline, and it can even be said that the side facing China is steeper, more rocky, and less suitable for combat.

So we can only hold on to all kinds of firepower from the devils here.

But fortunately, our army had already built various fortifications before the arrival of the Vietnamese army, trenches, cat's ear holes, and communication trenches...... There are even many caves that we use as troop caves and ammunition depots...... There is a thick layer of soil on top of this cave, and there is a solid rock underneath it, even the long-range artillery of the Vietnamese army has no way to take it...... All we had to do was to connect the entrances of these caves to the communication trenches, and when the Vietnamese army shelled them, we lined up to hide inside...... Just throw a few sentries outside to observe the situation of the devils.

What about the weakness of the Vietnamese army...... That is, there is basically no heavy equipment except for long-range artillery fire, and the roads are blocked by our artillery fire, so all tanks and cars can't get through, and there are undoubtedly many fewer heavy mortars, recoilless guns, heavy machine guns, anti-aircraft machine guns, etc......

In fact, these things themselves are not very heavy, for example, the 100 mortar weighs 73 kilograms, and it is also divided into three parts: the gun body, the gun carriage, and the bottom seat for three people to carry, and the 82 gun weighs 35 kilograms, which is also divided into three people's backs...... The difference isn't really huge.

The key is in the shell...... 100 mortars weighed 8 kg per shell, 82 mortars weighed 3.16 kg per shell...... That is, with the same capacity, two heavy mortar shells can be transported, and five light mortar shells can be transported. Coupled with the fact that this battle will cost hundreds of shells to say the least, the difference between the two is too much.

The same reason determines that the Vietnamese army does not dare and cannot bring too many heavy machine guns and anti-aircraft machine guns, not because they can't bring them, but because the logistics capacity is limited, and even if they do, they will have guns but no ammunition......

This is the importance of transportation to warfare, once transportation is restricted, then the performance on the battlefield will not only affect the speed of reaction, but also directly affect the combat effectiveness of the troops.

But luckily so...... Otherwise, we will have to endure even greater fire suppression on this 518.6 height.

At present, the Vietnamese army can only attack our army with their limited light and heavy weapons, and their only advantage is that the long-range artillery can be directly aimed at our positions...... But if the Vietnamese army wants to charge, the long-range artillery will always have to stop, otherwise the shells will not recognize people, and they will also blow up on themselves.

Sure enough, it didn't take long for the cannon to die down a lot...... Much less is said here because the bombing continues, but most of it is bombarded by our artillery.

"Di Di Di ......" There were several hurried whistles outside the cave, so the cadres of each company quickly pulled the soldiers out of the cave.

My headquarters is in a relatively independent small cave, the reason why I chose the small cave is because there are not many personnel in the headquarters, in addition to me and a few staff officers, that is, the communicators and guards, and the other reason is that I know that the smaller the cave, the safer it is, just like the cat's ear hole is not suitable for digging too big.

I ran out of the cave with my binoculars and lay down on the trench to look at it...... At this moment, a flare hit in the air, and the battlefield was in full view in front of me...... One by one, the Vietnamese troops charged at our positions with guns and cats braving artillery fire, and they were also worthy of being called the 320th Division, which was called the trump card troops, and all of them were very agile in their movements, and their judgment of artillery fire was also very accurate...... In my binoculars, I could clearly see that whenever they lay down or lie down in the crater, a few shells would explode nearby.

This is how the veteran behaved, and it is said that the veteran judged the shell this way...... If the whistling of the shell is sharp and piercing, then its explosion point is relatively far away, so there is no need to worry about it, but if it is slightly low as if gasping for breath, then don't think about it...... This bombing point is nearby.

Of course, experience on the battlefield is always easier said than done, knowing that the two kinds of whistling are inherently indistinguishable, and they have to be distinguished when all kinds of shells are blown up into a ball and all kinds of noises are intertwined...... Then you have to be a battle-hardened warrior to do it.

The Vietnamese army in front of us seems to be such a team, because they have successfully passed the blockade of our artillery fire and entered the dead end of the artillery fire - Tong Mian, which has become a ruin.

The Vietnamese army was not busy attacking, but lying at the foot of the hill digging individual bunkers and fortifications...... Of course, this is also the right choice, because the attack is continuous, and only a continuous attack can put pressure on the enemy and make sense. Otherwise, the enemy can calmly replenish ammunition, replace the wounded, or fill the gap in firepower if the attack is interrupted.

The purpose of the Vietnamese army in doing this was to gather enough troops and then launch a charge on our defensive line......

"Battalion commander!" Zhao Jingping asked me next to me, "Do you want to give them a treat?" ”

I know what Zhao Jingping means, our first line of defense is only 400 meters away from Tongmian...... The reason for this distance is to be able to control the turning point between the foot of the mountain and the high ground with firepower...... This is where the enemy's charge speed changes from fast to slow (the terrain changes from flat to uphill), and it is also where the explosive pack or grenade can roll to and stop...... Therefore, this line was called the "death line" on the previous battlefield, but due to the later development of artillery, the defense of the heights relied more on the "hilltop position" and "anticline" to defend, so the "death line" was somewhat unworthy of the name.

In other words, the Vietnamese troops located in Tong Mian are within the range of our light and heavy machine guns, and we can interfere with the movements of the Vietnamese troops with firepower.

But I shook my head, and instead of doing so, I ordered: "Let the artillery stop firing!" (To be continued......)