Roll led the legion back to [Bridgehead], frustrated by his failure to capture the Radar Destroyer.

The protagonist appeases his generals, and the Destroyer, as a new opponent, has a new class and abilities, and the Radar Destroyer will self-destruct is also unexpected. The mission of the 1st Corps "failed" is understandable.

And in the eyes of the protagonist, this is not a failure, at least the 1st Legion has the experience of fighting the Destroyer and has obtained a lot of information, which is even more significant for future wars than successfully capturing the Radar Destroyer.

In today's engagement, the 1st Legion lost nearly 100 fighters and three small and medium-sized beetles, which is equivalent to nearly 5% of the entire establishment, so the protagonist asked the rear to transfer the fighters and beetles to support as soon as possible and make up the formation.

As the only main legion that can have an advantage over the destroyer within a certain size in the field, the protagonist needs the 1st legion to be in the best state of full strength at all times.

After settling in the 1st Legion, the protagonist examines the loot brought back by the 1st Legion.

They brought back a hundred large and small mystery balls, half of each, of which the larger one had gradually begun to fade, but the small one remained in the condition of being dug out of the corpse.

The protagonist doesn't understand what they mean or what they do to The Destroyer, so he simply piles them all up in the warehouse. As long as these mysterious balls are not smashed into bombs, their properties are still very stable and can be safely stored.

In addition to the Mystic Orb, the 1st Legion also brought back two Radar Destroyer tentacles.

When the protagonist learns that neither of these tentacles was damaged in the Radar Destroyer's self-detonation, curiosity rises again.

Each of these two tentacles is about the same length as the Radar Destroyer, about 40mm long, which is eight or nine times the body length of the Big-headed Ant Soldier Ant Warrior, and each tentacle was carried back by the combined efforts of several warriors.

The diameter of the antennae is also about the thickness of the chest of the big-headed ant, and it is placed in front of the protagonist, like two giant pythons.

The tentacles are tough but soft, and the big jaws can't be cut at all when bitten. The antennae have a very distinct segment-like structure, which ensures that the antennae can be bent and twisted in any direction. Under the dark blue light of the underground fluorescent fungus, the dark brown background of the antennae can still be distinguished.

The antennae gradually narrow from the base to the apex, but there is an oval structure that suddenly expands at the apex. Looking at the roots, you can see that there is a small part of the structure that is hollow inside, but the deeper part is solid, but it is impossible to observe clearly.

This structure does not resemble the antennae structure of some of the ants that the protagonist is familiar with.

Whether it is a big-headed ant, a paving ant, a hunting sickle ant or a black-headed sour ant, its antennae are knee-shaped, with obvious distinction between upper and lower segments, and the stalk is very long. However, the Radar Destroyer's antennae do not have a knee-like structure, the stalk is very short, and the ring structure resembles a small earthworm.

The end of the antennae of ordinary ants is 2-3 segments expanded, and the full antennae are divided into 4-13 segments, while the antennae of the radar destroyer are only the last 1 segment is expanded, and the full antennae are as many as dozens of segments.

The protagonist guesses that this is very important to the tentacles, and through aerial reconnaissance before, the protagonist has suspected that the role of the Radar Destroyer is to search for targets like radar, so he is given such a name.

Judging from the action of the radar destroyer constantly shaking its tentacles all the way to search, this pair of tentacles plays the role of radar, although the protagonist does not yet understand its principle.

Ordinary ants also search through their antennae, but at short distances.

Ant antennae generally have the following functions:

The first is the highly sensitive sense of smell, which can find food, recognize directions, and distinguish odor information transmitted by peers.

The second is the keen auditory function, which can help ants receive sound information from the outside world and avoid danger.

The third is the motor function, which can feel the spatial position of the ants themselves and maintain the balance of the body. There have been experiments in which ants have their antennae removed, and these ants will walk wobbly, as if they are drunk, and will die quickly.

Fourth, it is used to explore the way and identify all objects that come into contact, just like a blind person uses his hands to perceive the world. This can compensate for the general poor eyesight of ants.

Fifth, the communication function. Ants can't speak, and the antennae on their heads are tools for communication with each other. Whether it's sending packets of information to deliver complex messages, or "talking" directly to the tentacles, or having a collective "talk" with the help of the cobblestones on the floor of a conference room, the tentacles are an essential tool. If the antennae of the ants are removed and put back into the original colony, they will not be able to smell their accomplices because they have lost their olfactory organs, and they will bite each other and kill each other when they meet.

Antennae are to ants what eyes, ears, noses, mouths, and hands are to humans, which shows the importance of their status.

The way ants' antennae function is so unique that even the protagonist doesn't figure it out.

These antennae are important sensory organs, and there are many tiny holes on the surface of the antennae, some of which contain cells that can sense smells and sounds.

The antennae are always moving, sometimes twisting, sometimes turning. The antennae can inform ants of sound waves, vibrations, smells, humidity, temperature, etc., and can also enable ants to distinguish the taste of food.

The information transmitted by the antennae and other information systems complement each other to form a complete communication system, allowing ants to assemble into large colonies and accomplish many tasks that they cannot do individually.

When two ants touch each other's antennae, they can secrete a chemical substance and transmit it to each other, and this chemical signal stimulates the ant's nerves and makes the ants know what to do.

The protagonist carefully examines the tentacles, touching them with his own from time to time, but to no avail.

It is not until the protagonist tries to put his tentacles into the hollow structure at the base of the Radar Destroyer's tentacles that the protagonist makes a discovery.

The moment he reached in, the protagonist felt that his tentacles were more sensitive, and everything in the entire lair, whether it was the sound of walking, colliding, chewing, or digging, was poured into his mind, making the protagonist's head instantly filled with countless information, and the stimulating head swelled.

He quickly withdrew his tentacles and took a moment to recuperate.

Thinking back to the experience just now, savoring the memories left in his mind, the protagonist wakes up.

These two antennae are simply high-sensitivity signal receivers, and they can be used by ants other than the Radar Destroyer!