During the ten days that Li Yi lay in the convalescent warehouse, the North Wharton Military Research Institute made some improvements to the "Li Yi brand fighter", not only replacing the more powerful energy core, but also reducing the eight ion engines to four, so the nacelle and wing structure were also redesigned.

Both of these improvements are Li Yi's requirements, and the powerful energy core can not only improve the protection of the energy shield, but also provide a steady stream of "ammunition" for the fire system, making its firepower more powerful and more intense, and lasting longer.

As for the loss of two ion engines on each wing, the main reason is that Li Yi realized in actual combat that there is really no need to increase the endurance too much and reduce other performance when fighting in an air battle in a small map such as stronghold battle.

Four ion engines, plus three solid combustion engines, and a liftable magnetic energy engine, this is enough, saving four ion engines can make the cross-sectional area of the wing smaller, the fighter is less likely to be hit, the anti-radar stealth effect is further improved, and the energy saved can further enhance the firepower.

Although it seems to be only two small changes, but this period of time can be a group of people from the Military Research Institute, at least half of the line circuit has to be rearranged and paved, the entire model structure has to be redesigned, and all performance data has to be recalculated.

The latest Li Yi brand fighter still has some deficiencies, but the performance is much more stable than the first generation of Li Yi brand fighter, at least some ridiculous low-level problems will basically not appear again, the rest is to pass further actual combat tests on each system, and then gradually carry out some subtle improvements and improvements.

When Li Yi asked Althea for a new fighter, the other party's attitude obviously changed.

In the past, this woman was ignorant and looked high, but this time, she finally looked at him squarely, said a few more words, and changed the title from "you" to "Your Excellency", obviously putting the two parties on an equal footing.

Li Yi is not an idiot, he knows that his high-profile appearance this time may have exposed part of his true strength, and as for how much he has exposed, he has no score in his heart.

Before, all I thought about impulsively was to avenge Wood, kill people and set fires, and fight desperately with the enemy, but when I came back, I calmed down and realized that I was afraid that I had become the focus of attention of the North Wharton higher-ups and major families.

Now, it is obviously impossible to continue to keep a low profile.

Since you can't keep a low profile, it's better to just be high-profile to the end, continue to show your strength and potential with a strong attitude, and then pretend to brag or something when you face a group of indigenous bigwigs, it is estimated that you can scare a lot of people stupidly at that time, even if someone wants to be unfavorable to him, they will weigh the consequences of offending him in their hearts.

With this plan in his heart, Li Yi, who was still a little unable to let go, completely put aside all his worries and drove the new fighter named after him to the front line!

During this period, the artillery coverage attack on the South Wharton side had stopped, not on their own initiative, but an armored artillery division on the North Wharton side locked on the opponent's artillery position and fired a large number of shells in less than 2 minutes, also turning it up in the way of artillery coverage!

An artillery division in South Wharton was reimbursed in this way, to be precise, all the artillery of a division was reimbursed, but there were almost no casualties.

The artillery radar of this time and space is very advanced, one side fires, and the other side can quickly lock on to the opponent's artillery position for counter-artillery bombing, so the artillery positions are all remote-controlled artillery with automatic loading shells, and when they are counter-shelled by the other side, only these hardware artillery and ammunition are damaged, but they can't blow up people, and the artillery of remote-controlled artillery is somewhere else, or even lying in the real system.

Of course, the artillery position can be completely used by the air defense grid to prevent counter-artillery bombardment, but fools know that it is absolutely not cost-effective to take a large number of air defense power grids to protect a remote-controlled artillery position, just look at individual mortars, one plasma shell can buy two individual mortars for military merits, this time and space, shells are often more valuable than artillery.

So theoretically, this would be an interesting tug-of-war scene.

The South Wharton Artillery Division was covered by artillery, and then it was blown out by the counter-battery fire of the artillery division in North Wharton, and then the artillery positions stationed elsewhere in South Wharton locked onto the counter-battery artillery division in North Wharton and knocked it out, and then the North Wharton side also let another artillery position continue the counter-battery attack, and so on......

What if all the artillery in the artillery positions is blown up at the end of the bombardment?

Just buy it!

Fry it when you're done buying, and buy it when you're done frying!

If you continue to fight like this, you will be fighting for money, and whoever has more money will be able to win the final artillery battle!

But if money can solve this unsolvable problem, the north and south Wharton would have been unified long ago, because both sides knew that if it was consumed, it would be the result of losing both, and no one could help anyone, so this kind of artillery bombardment would not last long.

If the scale of the battle between the two corps is not large, it is generally that the artillery of both sides fights a round very fairly, and then immediately ceases fire with a tacit understanding, unless the other side takes the lead in provoking an artillery battle again without paying attention to the rules, but even if it continues to fight, it will only use up all the existing artillery, and the artillery battle will end there.

After all, the resources and military merits of the legion are also limited, and it is impossible for the military department to issue unlimited free artillery quotas, which is like two soldiers who have run out of free weapons and ammunition, and then let themselves pay for the war, unless it is a matter of life and death, no one is willing to pay for their old capital.

Therefore, after the artillery unit of North Wharton terminated the artillery position of South Wharton, it only took the initiative to stop the shelling after covering the No. 27 stronghold with a symbolic round of artillery, because if it was greedy, it would break some tacit understanding, and the other artillery positions on the South Wharton side would not sit idly by.

The shelling, though symbolic, blew up Stronghold 27 beyond recognition, as not everyone could shoot an anti-aircraft grid into the sky like Gehry's mortar position.

Stronghold 27 had been besieged by the Mecha Regiment of North Wharton, and although South Wharton had been increasing troops to this stronghold, it was quickly taken down by North Wharton when the mecha troops withdrew from the battlefield.

So far, North Wharton has controlled the five enemy strongholds of 25, 26, 27, 9, and 10, not counting the No. 8 stronghold that has disappeared.

On this basis, the command of the 23rd Army Corps ordered all units to continue to increase troops to the front line, relying on the occupied strongholds, and first expanding in the east and west directions, that is, the next combat task is to lay down the 24th and 28th strongholds, and then occupy the 7th and 11th strongholds to the south, and then continue to expand from east to west and then to the south, so as to gradually pull the wound of South Wharton bigger with points and areas!

As for the South Wharton side, due to a falling out with the mecha troops, the current combat mission of the command is mainly to recapture the No. 9 and No. 10 strongholds, as for the other forward strongholds, they are only constantly increasing troops and passively defending, and there is also an important tactical goal is to seize air supremacy.

Without the mecha boss to fight the vanguard, then the armored and aviation units can only be pulled up as the main force, but the armored forces have no advantage in meeting the mecha units, so the South Wharton side pinned all its hopes on the marine aviation units.

After all, the scope of the operation is close to the South Wharton base, and the air force of our own side has the support of ground anti-aircraft artillery, which has a certain advantage, and as long as it can grasp the air supremacy, then it can also largely offset the negative impact of the strike of the mecha division, at least in the eyes of the South Wharton command, there is no problem in completing the combat mission of recapturing its own stronghold.

However, a familiar and talkative North Wharton fighter appeared!

When the front side sent back the real-time monitoring image of the fighter, the South Wharton command was silent for a while, and everyone looked at the fighter plane on the screen in a daze!

Nima, it's just that a perverted mecha came here and turned the world upside down, and now there's another perverted fighter?

The next moment, the command headquarters, which had been silent just now, was boiling in an uproar!

They searched for this fighter for ten whole days, and did a lot of preparatory work in the early stage, but there was no shadow to be seen, and then they launched a retaliatory raid!

Now that this fighter has reappeared, what else is there to say - knock it down!

Compared to the combat mission of recapturing the stronghold, all the senior leaders and staff officers of the corps command agreed that it was more important to shoot down that fighter, because he had been slapped by someone before, and now he had to be slapped back to relieve the hatred in his heart!

At this time, even Abel the commander of the First Mecha Division, who had been watching coldly from the sidelines, couldn't sit still!

Compared to that perverted mecha, he hated this perverted fighter even more!

There is no other reason, that perverted mecha is an opponent worthy of his respect, people are so awesome, they can pick more, their knowledge is definitely higher than him, and their status is definitely more prominent than him, so they can't accept it!

And the Marine Aviation Unit is a scum in the eyes of Able, no different from the armored forces, just taking advantage of the fact that it can carry out air strikes, in fact, the Marine Aviation Forces are another form of armored forces!

But it's such a scumbag, some time ago, he actually destroyed more than a hundred mechas, and the number of losses exceeded the number destroyed by that perverted mecha, which is simply a shame for the mecha troops!

Originally, he just planned to see other people's jokes, and never send a single soldier again, but who expected that there would be such a small episode now, so he secretly ordered the sniper team that was going to be used to deal with that mecha to go to the front line, looking for a suitable opportunity to use the railgun to directly kill that fighter!

At the same time as Abel gave the order, the command was also ordering, and it was also a big deal, directly ordering a full Marine Aviation Flying Group to be responsible for encircling and destroying that fighter!

A flight group has more than 150 fighters, and of course it is impossible for all of them to take to the air, otherwise it would not be able to accommodate so many aircraft in such a large place as a stronghold, so the Marine Aviation Brigade actually only sent a flight squadron with a total of more than 40 fighters to participate in the encirclement and suppression operations.

Even so, the amount is already terrifying!

The front had already been sent out by the command to carry out a flying group to carry out the combat mission of fighting for air supremacy, so the number of fighters that finally arrived over the battlefield reached almost 200, and if you count the fighters sent by the North Wharton, this number will have to increase by more than 100!

This has caused the already chaotic air combat battlefield to become more crowded, from an altitude of 500 meters to an altitude of more than 10,000 meters, almost every space has fighters from both sides chasing each other, and from time to time you can see fighter jets either exploding directly into a fireball, or falling in the billowing smoke!

And the fighter plane piloted by Li Yi is at an altitude of 20,000 meters at the moment, which can be described as a small view of the mountains!

At this height, it takes more than 1 minute for the physical machine to climb at full speed, and it is extremely fuel-intensive, so basically there is only one chance to come up when it is fully fueled.

Moreover, after coming up, the aircraft is easy to freeze, and as the flight altitude increases, the narrow air density will decrease, the starting power of the solid combustion engine will decrease, the speed will slow down, the reaction efficiency of the wings will also decrease, the maneuverability and stability of the aircraft will also deteriorate, and if the engine stops down, it will become a free fall.

The energy machine is not worried that the ion engine will stall, but at such a high altitude, you have to climb at a small angle for half a day to come up, and generally only the energy-type reconnaissance and early warning aircraft will do this, otherwise it is completely meaningless to climb up, or its meaning is only to see the scenery, and it is almost impossible to hit the target below at such a high position.

As for the magnetic energy machine, it is even more impossible, because the farther away from the planet, the weaker the magnetic field, the magnetic energy engine on the general magnetic energy machine only supports an altitude of more than 6,000 meters, of course, the magnetic energy engine of the Li Yi brand fighter can support an altitude of 15,000 meters, but this has also reached the top.

Therefore, for the next 5,000 meters of climbing, Li Yi used a combination of energy engine and physical engine, and the climbing speed was still very fast, and it did not consume much fuel.

He came up with only one purpose - to knock out the enemy's early warning and reconnaissance plane in the sky and blind the enemy's "eyes" in the sky above the stronghold!

On Wharton, there is no "Skynet" system that can cover the whole planet as in the novel, nor does it have a GPS system in old time and space, and some are only temporary early warning and reconnaissance planes used as eyes in local wars.

The reason is very simple, whether it is low earth orbit, medium orbit or high orbit, or even in space within one light second of the planet, as long as one side dares to launch artificial spy satellites or a starship approaches the planet under the other party's line of sight, the countless giant land-based batteries built by the other side on the surface of the planet will be destroyed as soon as possible!

The power of this giant land-based battery is much more powerful than the main gun on the starship, anyway, the land on land doesn't cost money, you can build as big a main gun as you want, and you can install as much power as the energy core can be installed.

As for the coordinates beyond one light second, the detected coordinates are all offset, the error is large, and there is a signal delay of at least three seconds, so the significance of detection is lost, so the "Skynet" system does not exist.

It is precisely because of this that the starships in outer space cannot interfere in the land war on Wharton's planet at all, so the north-south battlefield will be maintained to this day, otherwise the war on the planet will not be piled up with human lives, and the starship fleet in outer space can easily wipe out the entire legion on land in seconds if the starship fleet in outer space is fully fired.

Therefore, the space cities in the north and south of Wharton are also built at the north and south ends of the planet, so that the enemy's powerful land-based batteries cannot be seen or hit, and once a starship crosses the line and appears in the firing angle of the enemy battery, it will definitely be killed in an instant!

Therefore, the land war on the Wharton star can only be carried out in the most primitive way, and at most, it is to send early warning reconnaissance planes to temporarily monitor the battlefield in real time at high altitudes, and the early warning reconnaissance planes do not dare to fly too high, too high, once they enter the firing angle of the land-based battery, the end will be the same as those starships.

In previous wars, the North and the South seldom went specifically to attack each other's early warning and reconnaissance planes, not because they were difficult to fight, but because it was meaningless to fight.

This thing is an energy drone, there is no attack power, the role is just to act as a temporary low-altitude artificial satellite, the monitoring range is not large, and a bunch of material components are not worth much, it is not troublesome to knock out a fight, and it is not troublesome to send another one anytime and anywhere, and if it fights like this, it will become a war of attrition, so then everyone simply turned a blind eye, and the early warning aircraft on both sides were floating on the battlefield at the same time, and no one hindered anyone.

But on the contrary, Wharton broke into an alien traverser, and this outsider often played cards unreasonably.

According to Li Yi's current idea, after all, a person's strength is limited, no matter how awesome he is, he only has one pair of hands and two legs, and occasionally goes out to the mountains to fight other people's elites, and the remaining cannon fodder is left to the natives to solve by themselves, and now that the entire army is attacking on all fronts, it is better to do some auxiliary work, such as knocking out the opponent's early warning aircraft, which can improve the overall killing efficiency of North Wharton.

Another reason is that there are too many and too many fighters on both sides below, and there is absolutely no technical room for maneuvering.

Hitting AWACS aircraft was almost completely effortless.

The flight altitude of the early warning aircraft is generally 15,000-18,000 meters, the speed is very slow, and the maneuvering range is also very small, because the airborne radar can only ensure the normal search and monitoring of the air to the ground under the condition that the turning slope of the aircraft is less than 10 degrees, and the downward view ability is weaker than the upward view ability.

At the moment, the South Wharton side has a total of three early warning planes in the sky, one of which is still used for backup, and the other two early warning planes, one is used for electronic early warning and directing and guiding its own fighters, and the other is a jamming early warning aircraft, which is responsible for electronic and quantum interference on the battlefield.

At this time, Li Yi's fighter plane flew higher than the early warning plane, and it was hit down from above, and the early warning plane, which was almost a live target, could basically knock out one with a shuttle magnetic rail, and all the early warning planes in South Wharton were shot down in just three or two strokes.

The importance of early warning aircraft is self-evident, the absence of early warning aircraft is basically equivalent to the loss of air supremacy, almost in the next second, the air combat units in South Walton are in a mess, and the combat pilots found that the coordinate points of the enemy aircraft on the tactical map are all gone after a flash, and they can only observe the situation around the battlefield with the naked eye!

That's it, the enemy's air-to-air missiles, no matter how you dodge, can't dodge, whether it is maneuvering or firing jamming bombs, it is all ineffective, and even if you run back to the forward base, those air-to-air missiles are still directly chasing behind the fighter's ass through the energy shield barrier!

Without the electromagnetic interference of the opponent's early warning aircraft, these air-to-air missiles have all switched to the navigation and command mode of the early warning aircraft, and any deception means are useless to them.

The North Wharton fighter received instructions from the command headquarters as soon as Li Yi shot down the early warning plane, and the mounted airborne missiles came with a salvo, and at this time, there was no need to lock and aim before the missiles were hit, anyway, there was a navigation of their own early warning planes, and in the case of no interference, they could be hit casually with a tracking missile that only chased the fighters!

As a result, for a while, fireworks bloomed in the sky, and dozens of South Wharton fighters were destroyed by missiles in a very short period of time, and the remaining fighters were not out of danger, but they were chasing several missiles behind their butts, but they were not turned into fireworks for the time being!

By the end of this round of missile strikes, the number of fighters shot down by missiles in South Wharton had already exceeded 100, and the sky over the stronghold suddenly became empty.

However, the vast majority of fighters were only destroyed by missiles, and the combat pilots inside ejected their escape eggs in time, and except for a few unlucky people, they basically returned safely to the forward base.

It doesn't matter if the fighters are gone, they are very cheap anyway, as long as the combat pilots are still there, the combat effectiveness is still there, so the next moment, the fighters of South Walton are swarming out like locusts!

Four AWACS aircraft are also mixed in the group, their task is to re-establish the air warning and jamming system, and at the same time there is a physical aircraft flight squadron to accompany them, whose mission is not only to escort the AWACS aircraft, but also to go up to kill the perverted fighter combat mission!

Not only that, but the South Wharton side also launched hundreds of surface-to-air self-propelled cruise missiles directly from the forward base, and only a very small number of these missiles were aimed at the North Wharton early warning plane, and most of them were aimed at Li Yi's fighter.

With the assistance of his own early warning aircraft, Li Yi immediately discovered these incoming missiles and the climbing squadron of physical aircraft, and the two eight-company energy cannons in the belly of the cabin immediately opened fire from a long distance, and nearly hundreds of energy rays per second were scattered like rain!

More than ten seconds later, half of the missiles were exploded by Li Yi from afar!

After another ten seconds, the remaining half of the missiles were all reimbursed!

With the radar monitoring and help of the AWACS aircraft, his air combat shooting hit rate has been greatly increased, and under normal circumstances, so many missiles may have to be close to each other before they can be completely eliminated.

The squadron of enemy fighters that followed and was in the process of climbing was not so easy to hit, and the enemy was very clever not to fly straight in the direction where Li Yi was, but to change the direction of the climb back and forth in a "Z" shape, which was more difficult to hit than a brainless missile, even if some energy rays swept it, it was just a drop of energy shields.

At this time, the distance between the two sides is too far, 20,000 meters is just the height, and the actual distance between the two sides is even farther, and the distance of 20 kilometers in space is considered a medium-range distance, let alone on the planet.

After sweeping towards the enemy group for a while and finding that it was difficult to inflict a fatal blow on the enemy planes, Li Yi simply swung the nose of the plane and dived down towards the group of planes diagonally below......