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A civilian spaceship of this level is a civilian spaceship of this level, and it is a cargo spaceship inside the star system inside the earth's civilization, not even a passenger spaceship, and it is too slow to be disliked by passengers.

The products of this grade belong to the civilian products dedicated to short-distance transportation within the earth civilization, and each star field of the earth civilization has a related spaceship factory that can produce and build by itself, and it is incomparable with faster-than-light spaceships, space-time jumping spaceships and other warships, and mainstream high-end foreign trade commodities.

In essence, this kind of spaceship can be regarded as a relatively non-potential sunset industry within the earth's civilization, similar to the civilian production of the bicycle industry, except for a few luxury products that play with the concept, there is not much development potential at all, and it has never been taken seriously.

However, in this war with Iron Battlestar, these civilian spaceships came in handy, and were given an important mission, that is, to prevent Iron Battlestar from secretly destroying obstacles that prevented it from making short-range space-time jumps.

You must know that the speed of light attack range of the Iron Battlestar is a full five light-years away, and the reason why the Iron Battlestar cannot directly jump to the range of the wormhole passage is because the earth civilization has arranged a large number of high-quality, high-strength obstacles in a large area around the wormhole passage.

These obstacles are within five light-years of the Iron Battlestar jump point, and the Earth civilization has deliberately made a special deployment, deliberately arranged many and densely, and its density far exceeds the density of obstacles in other areas.

Arranging three or five large obstacles within a range of 10,000 kilometers in other places can already effectively prevent the space-time jump function of the Iron Battlestar, but around the large area near the wormhole passage in front of the Iron Battlestar's jump point this time, the earth civilization has deliberately arranged more than ten times the high-density obstacles, preventing that the Iron Battlestar will use a large number of warships to clear the jump point on the bright side, but secretly use faster-than-light guns to attack and damage those obstacles, so as to secretly clear the obstacles around the jump point.

After all, compared to the ship-carrying troops risking huge sacrifices and slowly going to open up jump points, if they can use superluminal cannons to secretly smash obstacles in certain areas and successfully clear those jump obstacles, this efficiency will be many times higher.

Even if the ship-carrying unit wants to sail to an area beyond one light year without any twists and turns, it will take at least about two months, but for the Iron Battlestar's superluminal cannon, let alone a distance of one light year, even if it attacks an area far beyond the range of three light years, it only takes about a day.

If the Iron Battlestar can repair the plank road in the open and darken, and send a large number of ship-carrying troops to clean the jump point on the surface, but secretly manipulate the faster-than-light cannon to bombard those large-scale obstacles, and invisibly clear the jump point obstacles, if the Iron Battlestar wants to complete the task of affecting the passage capacity of the wormhole passage, or even destroying this wormhole passage, this can at least save a lot of time.

In the face of such a huge temptation, it is naturally impossible for the Iron Battlestar to endure it, so the Earth civilization has already made some preparations, specially made a batch of cheap and large sub-light spaceships, and the division is responsible for each area, and if any obstacle is found to be destroyed by the Iron Battlestar, it is necessary to complete the repositioning of the obstacle as quickly as possible, and place the new obstacle in the relevant area.

After all, in the previous various combat operations with Iron Battlestar, Iron Battlestar has fully shown that it is good at subtle operations and likes to play with fine layouts.

In particular, the Iron Battlestar still has a little advantage in this battle, that is, the attack range of the Iron Battlestar's faster-than-light cannon is five light-years wide, and within this five-light-year range, the Iron Battlestar's superluminal speed can traverse the distance of five light-years, which may form a breakthrough at any point.

It is absolutely possible for Iron Battlestar to choose multiple jump points at the same time for layout, on the surface it mainly clears obstacles in a certain area, but it is possible to attack another area sporadically, and Iron Battlestar gradually completes the cleaning of jump points through repeated fill-in attacks.

After all, the earth civilization does not know what the precise criteria for the Iron Battlestar to choose the jump point are, and what is the limit of the Iron Battlestar's tolerance for the obstacles at the jump point, no one can say clearly, this is something that even the Earth cannot analyze, so the Iron Battlestar uses the superluminal cannon to attack the Earth Battleship on the surface and clear the obstacle point secretly, which has become a very feasible thing.

In order to avoid the success of the Iron Battlestar conspiracy to the greatest extent, the Earth civilization chose to increase the number of sub-light spaceships used to supplement the obstacles as much as possible on the premise of increasing the density of obstacles in various star fields as much as possible.

These sub-light spacecraft are even specially designed for this mission, each of them is very large, more than 30 kilometers in length, but the structure is simple, the process is simple, the production speed is extremely fast, the huge cargo compartment is filled with a large number of obstacles of sufficient size, and can complete a large number of work tasks in the relevant area location.

The civilization of Earth has placed several times the number of sub-light ships in each area, and only one ship is working in the relevant area, and the other ships are sleeping on the back of huge obstacles with incredible structural strength to prevent them from being hit by the stray shells of the Iron Battlestar.

Even if some ships are destroyed by the Iron Battlestar, they will be able to activate the spare ship in the shortest possible time and re-complete the relevant obstacle replacement work.

Because considering that once the obstacles destroyed by the Iron Battlestar have been successfully filled by these sub-light ships many times, the Iron Battlestar may choose to launch an attack on these sub-light spaceships, and destroy these extremely easily destroyed spaceships in large numbers, so as to tear through the obstacle filling network composed of these spaceships and complete the clear work of the obstacles.

Therefore, in order to cope with this situation, the earth civilization even transported a large number of sub-light spaceship production facilities to this theater of operations in the preparation stage before the war, and built a number of sub-light spacecraft production bases in various parts of this theater of operations, equipped with relevant spacecraft storage warehouses.

As soon as these factories were built, the production of the relevant spaceships began on a fully automated mechanical automation line, producing a large number of sub-light ships.

Each sub-light spacecraft produced is stored before the storage warehouse is filled, and after the warehouse is filled, it will go directly to various designated areas to patrol and parade in a large area, and once it is found that the sub-light spacecraft in a certain area is destroyed and damaged, these spacecraft will automatically replenish it and continue to complete the obstacle network repair work.

It can be said that in order for this obstacle network that can restrict the steel battle star from directly jumping in time and space, the earth civilization has carried out a lot of work, and various transportation facilities, energy warehouses, obstacle warehouses, and logistics support bases have carried out a complete set of preparations, in order to prevent any unexpected situations from occurring.

And with the beginning of the war, after solving the security threat of the surrounding tachyon guns and releasing a large number of carrier-carrying ships to clean up the jump points, the actions of the Iron Battlestar also showed that these all-round preparations for the earth's civilization were really not superfluous at all.

While attacking the faster-than-light battleships of the earth's civilization, the faster-than-light guns of the Iron Battlestar that did not hit the battleship were not wasted, and they all came in handy.

According to the relevant statistics of the earth's civilization, at least in the range of three light years, the hit rate of the Iron Battlestar's superluminal cannon against various obstacles is definitely more than three nines, and if the line of sight spreads to the scale of more than four light-years, it will be found that the hit rate of the Iron Battlestar's superluminal cannon is infinitely close to 100%.

Although the Iron Battlestar only has a 1% hit rate against the faster-than-light battleships of the Earth civilization, the other faster-than-light cannon attacks have not been wasted at all, long before the Iron Battlestar launches an attack, it has already set the attack route for each faster-than-light attack, even if it does not hit the faster-than-light gun, it will hit some other obstacles in the subsequent path.

After all, compared to the faster-than-light warships that are difficult to calculate their positions at all, because the delay of the faster-than-light cannon attack is too long and they can only calculate the target by probability, those positions are relatively completely certain, and obstacles that are relatively stationary in the starry sky are too easy to attack, and with the ability of the Iron Battlestar, the hit rate on them reaches a 100% level, which is simply a normal thing.

Therefore, because of the continuous superluminal cannon attacks that have lasted for more than ten days before the Iron Battlestar, the loss of the earth's civilization is not only the loss of tens of millions of faster-than-light warships and countless obstacles, this is also a great result of the Iron Battlestar.

The Iron Battlestar is extremely scheming, playing countless tricks in the process of destroying those obstacles, such as concentrating on attacking obstacles in a certain area to try to clear a jump point in the fastest time, and walking dog-like attacks on obstacles in the area of a sub-light spaceship, destroying the easternmost obstacle and the westernmost obstacle at the same time, and sliding the sub-light ship around like a dog.

In short, through these various destruction effects, Iron Battlestar has played a large number of sub-light speed ships around, and one ship after another is running around at high speed, and rebuilding new obstacles near the obstacles destroyed by Iron Battlestar, all of them are very busy.

In addition to these clever attacks, Iron Battlestar is also constantly violently destroying those extremely vulnerable sub-light ships, leaving vulnerabilities in the sub-light ship network in various areas.

Fortunately, when these sub-light ships are destroyed, their cargo compartments will also be blown up, and a large number of obstacles will be scattered, so that the surrounding area will form a relatively safe state of dense obstacles, and soon the sub-light spaceships patrolling and roaming around will also fill the position, so as not to be broken through by the steel battle star in the space-time jump blockade.

It can be said that although on the front line of mutual destruction of warships, although the Iron Battlestar and the Earth Civilization have really invested in blood, and the cost of casualties on each battleship can be called amazing, the sub-light speed spaceship defense line in the rear defense line of the Earth Civilization is really in full swing, and the situation is extremely complicated.

Perhaps for the civilization of the earth, the Iron Battlestar has put all these faster-than-light firepower to use, attacking the corresponding targets, and the only benefit of not making these firepower unaware stray bullets on the battlefield is that those ecological habitation planets, space bases and other livelihood and industrial areas in the rear can be less affected by this war, reducing the difficulty of cleaning up the aftermath after the war.

You must know that in order to deal with the threat of the Iron Battle Star, the earth civilization has spent a huge price during this period of time and carried out crazy war preparations.

Although a considerable number of people were successfully evacuated before the war, due to the lack of transportation capacity, there are still a considerable number of people who have not successfully evacuated, and they are all hidden in the underground security bases of one planet after another, and in this battlefield, there are also several ecological planets that may be affected by the war at any time.

It may be that as long as a superluminal stray bullet of the Iron Battlestar falls on those planets, it can cause tens of thousands of casualties if it is not done well, and such a casualty scale is not a problem at all for the strength of the Iron Battlestar's superlight cannon attack.

Now the faster-than-light cannon has also used all the stray bullets that missed the battleship, which has reduced the casualties of the people on the side of the earth civilization in disguise, but this has also caused Alexander on the side of the earth civilization.

As the Iron Battlestar continues to attack, destroying a large number of obstacles and sub-light ships, it can be said that endless variables have been added to the space-time jump blockade line of Earth civilization.

Although the earth civilization has implanted a signal transmitter in each obstacle, through a large-scale information network, it can form an accurate control of the obstacle situation on the entire battlefield, and form a blockade of the jumping ability of the steel battle star, but with the emergence of more and more complex situations, the blockade state of the earth civilization is still inevitable and gradually began to appear various problems.

In such a complex battlefield situation, even a fast-moving stone can become a huge hidden danger. Stones colliding with each other can damage the signaling device, creating a misinformation that misleads the work of the spacecraft.

The rapid movement of a large number of stones may form a chain collision, which can even cause a local obstacle vacuum state under certain circumstances, coupled with the fact that some signal transmission centers are intentionally or unintentionally destroyed, the earth civilization wants to maintain the safety of the blockade network, and the situation that needs to be dealt with is simply not too much!