This liquid explosive is liquid at a lower temperature, and it is easy to volatilize into a gaseous state at a slightly higher temperature, these gases are mixed with air to form an aerosol mixture, this cloud-like substance will explode when it encounters fire, it is very explosive, produces a strong shock wave and huge pressure, and will consume a lot of oxygen and produce carbon dioxide with suffocating effect when deflagrating! Soldiers within a certain range are suffocated to death due to lack of oxygen and inability to breathe!

Fortunately, Fort Vau's defense system is very complete, with trenches densely covered in the net, and each defense node has bunkers and bunkers, which are very strong, and the bunkers are all interconnected, making it difficult to remove the soldiers hiding in the underground bunkers with this kind of high-efficiency cloudburst bombs! After getting acquainted with the principle of this suffocation bomb, the defense method is also very simple, lie down, cover your mouth and nose with a wet towel, and wait for the air to flow naturally. Moreover, there are bunkers and bunkers with doors, and the defense is still very strong against this kind of weapon that does not directly kill people!

Zhang Fan's team, which rushed to the forefront, held a position that was also a high ground that was easy to defend and difficult to attack. There are only 9 people left in the replaced troops, and all of them are wounded! It is precisely because of the very good defensive position of this high ground that this position has been able to hold on to the present under the crazy attack of the German army!

Accompanied by Zhang Fan Riyadh and Patigul's three support squads, more than 100 French soldiers came to reinforce and reoccupy this trench and dark fortress system. And immediately rush into battle!

Akon and Worf, the fierce king Alimu, are both tacticians, and immediately chose a blind spot to summon the 'Berta's Hold' ironclad fortress fort! Lying on the ground like a turtle's shell, a shrunken howitzer emplacement, with a stubby barrel sticking out.

The howitzer is a mortar with a very curved trajectory and a large angle of fire, and the shell falls in a parabolic line with a large angle of fall, close to hitting the target vertically! Due to this, its shot will not be blocked by the line of sight. Akon and Wof, the place chosen by the fierce king Alimu, are just holding the pass of a high ground, in the blind spot of the viewpoint halfway up the mountain. The opponent's fire could not be covered by the mountain.

The Spiritual Howitzer Battery, which can automatically seek out the enemy and fire spiritual cannonballs every minute, will not be blocked, and can provide extremely haode fire support. If the Germans break through, they will also be hit by the fire of the bunker! As long as the rest of the positions on this high ground are not occupied by the Germans, and the flanks of the 'Berta's Fort' bunker are not threatened, it is impregnable!

The space inside the Iron Armor Castle is still relatively spacious, and it can accommodate 15 people to fight in turns! The bunker has three firing windows in the shape of a pret. Under the dome of the tortoise shell, there are two shooting observation windows. Under the casemates on the dome, there is an additional window for observation and firing, which allows you to see even further! If it is used for sniping or machine gun points, it can form a three-dimensional fire network with the following two shooting windows!

However, none of the Ring Bearers, with the exception of Franconia, fired their own fire in the lower two shooting windows. Instead, it was handed over to the four French machine gunners who had been seduced by the Harpy. Because the scene characters deal with the scene enemies, it is the most haode choice. The attack power of its weapons and items is not weakened by the scene. An observation window above the bunker is shared by Regulus and another French sharpshooter.

In this defensive battle scenario, Regulus's sniping ability is the most able to be used. In previous battles, he had already shot dozens of German non-commissioned officers, earning a bunch of merit points and bonus points. The others are just playing soy sauce, except for Franken, who has a bonus to the lethality of machine guns, and can suppress the group charge of ordinary soldiers, and also earns some merit points and bonus points.

There is not enough space in the dark castle, and Yoda has already relied on the ironclad dark castle to summon his own people to deepen and strengthen the deep trenches around the dark castle. It has also expanded a relatively complete underground bunker a lot. Most of the vow-bearers rest in it. However, now the German offensive is very fierce, and it is impossible for everyone to play soy sauce anymore, they are all honestly lying in the trenches and shooting at the Germans. The mission reminds you that you must hold out for 24 hours and may face more than five German attacks!

As soon as Zhang Fan and others gained a foothold, the first wave of German attacks arrived. The first is the preparation of artillery extensions. The deafening sound of artillery lasted for five minutes, plowed the position again. The 'Berta' battery on the dark fort actually did not show weakness, and also fired five spiritual cannonballs to fight back! However, because of the distance, there is no way to assess the lethality of this battery.

Akon wanted to take a wooden kite to the sky to reconnoitre, but when he saw the German planes circling in the sky, he still flinched. Although only two of the Harpys were given the mission of shooting down ten German planes in the scene, Akon knew that his wooden kite would definitely be sent to death in the sky. These German planes are even more terrible than the poisonous bee 'Qinyuan' on the Kunlun Mountains! Only when the number of German planes is reduced, then pull the flying carpet of the sacred dragon harpy and Patigul, and go up together to pick up the leak.

Five minutes later, a dense mass of German soldiers gathered from a distance, and the riflemen charged forward as they opened fire. There were Spitfires scattered among them! The 'Belta' cannon on the bunker happened to fire automatically at this time, and a spiritual cannonball roared into the crowd of German soldiers!

Flames swept away! Within fifty meters in diameter, there was not a single living person! But this cannon also killed and wounded more than 20 German soldiers. And that gap was instantly filled by the German soldiers who poured up! The straggler formations of the German offensive were restrained from this fire coverage. It can minimize the lethal consumption of artillery fire on dense personnel charges!

The clouds in the sky condensed into a black cross, slowly attacking the French position. Zhang Fan and other ring bearers are each equipped with a World War II-era M2 heavy machine gun! As soon as the German soldiers entered the firing range, they were hit by spiritual weapons!

However, the fire coverage of the blue and green M2 machine gun props encountered defensive enchantment resistance outside the German formation! It's like the formation defense encountered when fighting in the Datang scene. These soldiers without shields, the momentum of their attacks actually formed a virtual image of a steel chariot shrouded in black gas, and the spiritual power bullet bounced away without hesitation!

Everyone was not surprised by this situation, so they had to put away the machine gun, pick up the gray rifle props from the First World War issued by the scene, and shoot live ammunition. Just like ordinary soldiers, they have to be loaded and unloaded, which is very troublesome. But the shooting effect is still good, at least hitting the enemy can hurt them.

But these World War I weapons are really not very good. Let the ring holders who are accustomed to the automatic attack of spiritual weapons are very unaccustomed to it! Everyone would rather fight in close quarters and maximize the martial arts advantages of the Ring Holder! But with so many enemies rushing up, I'm afraid that no matter how high the martial arts of the Ring Bearers who have been weakened will face a terrible situation!

Fortunately, at this time, the French machine gunners in the ironclad bunker opened fire! The bullets fired by those machine gunners were able to break through the imposing barrier of the German soldiers' charge with a kind light, and shoot the steel chariot to a thousand holes! Pieces of German soldiers were shot and fell. That's the power of the characters in the scene. It's worth five or six high-level vows!

Franken's dark gold cannon also fired, and the pale golden spiritual bullets had the same power as the bullets of these machine gunners, and many ordinary German soldiers were shot and fell. Under the protection of the Bunker, this timid guy is like a fish in water, maximizing his ability to strike with long-range firepower!

Among the followers of those scenes, only the red-haired girl pirate Rebecca of Zhang Fan's team and the Indian longbowmen of Riyadh's team can attack the enemy from a distance. Rebecca, a red-haired girl, can summon one or two Caribbean pirates to help from time to time. This little girl is very suitable for this kind of positional warfare.

French soldiers from other directions of the position also began to attack, and the barrage was formed in an instant! German soldiers fell in pools of blood one after another! However, because of the resistance of the soldiers in front, the German soldiers in the rear continued to advance, although the casualties continued to increase. But they were also getting closer to the French positions......

However, the closer the distance, the casualties of the German army also increased, and every inch of advance was exchanged for the lives of soldiers! This is the horror of positional warfare! And in the face of the complete trench bunker system, this casualty is even further expanded!

But the French positions were not safe, and at least three sections of trenches were destroyed under the preparation of German artillery fire! The French army sent a part of the soldiers to step up the digging and joined Akon Yoda and Riyadh. These alchemists also have bonuses in repairing defenses, much faster than ordinary soldiers.

"They are approaching......" Patigul commanded, looking at the distance of the German soldiers, "we fight back!" ”

An elephant roared over the French position, and immediately after, a giant elephant with six tusks in battle armor rose up its hooves and rushed towards the German soldiers from the hillside! The bone spurs on his body flew out and burst in the crowd! That six-tusked war elephant king is a sharp weapon for charging into battle! I saw the phantom of the ironclad chariot condensed by the German charge, under the impact of the six-tooth war elephant king, it dispersed violently!

A huge tree man in the trench also quickly stood up, stretched out its branches, grabbed a piece of cement block of the bunker that had been damaged by the bombardment, and threw it at the German position! 100 Death Elves, raining arrows, shot at the German soldiers who were broken by the Six-Tusk War Elephant King! These death elves, like a hundred snipers, have exerted a huge killing efficiency after the Six-Toothed War Elephant King broke through the formation! In almost ten seconds, hundreds of German soldiers were shot!

The Six-Tusk War Elephant King rampages through the German charge formation, but is immediately threatened! The German flamethrowers scattered among the riflemen raised their flamethrowers and spewed flames at the Six-Tooth War Elephant King! These Pyros don't have a lot of defense, but they have super strong attack power from mid-range!