The main focus of this battle was defensive operations, and they built strong fortifications in advance.

Even if the devils have a large number of bombers coming, they can resist the enemy's bombing.

"Buzz—"

Dozens of Japanese planes roared in, and after a while, the group flew over Nanguan County.

Because of the fear of the attack of the anti-aircraft fire of the security group, the devil's plane always maintained a sailing altitude of about 1,500 meters.

In the high altitude, there is a devil Shaozuo pilot who is very cautious, and from time to time he holds a telescope to look down and inspect the situation on the ground.

This devil is a scout of the aircraft group and a flight combat commander.

After observing the situation on the ground, the devil Shaozo shouted into the throat microphone: "Imperial pilots, use poison gas bombs and prepare for attack!! ”

"Hayi, Captain!!"

The devil's bomber pilots responded to the throat microphone.

I saw that more than a dozen bombers in the air all opened the bomb bay, and the devil bombardier quickly dropped a large number of aerial bombs from the bomb bay.

"Hurricane, hurricane, hurricane......"

The bombs that fell from the plane let out a terrifying scream like a hurricane.

The aerial bombs in mid-air were densely packed with a large area, at least nearly 100 of them.

The aerial bombs were as dense as meteorite rain, and they bombarded the ground in Nancheng County.

By the time the bombs fell, in addition to the air defense units, the officers and men of the security regiment inside and outside the city had already hidden themselves in the fortifications.

"Boom, boom, boom......"

One after another, the bombs exploded on the ground, most of them on the defensive positions outside the city, and some inside the city.

The little devil's behavior is really despicable and cruel, and these aerial bombs dropped are all poison gas bombs.

As soon as the gas bomb fell to the ground, it released a large amount of toxic smoke.

Poisonous smoke quickly filled the perimeter of the position, and with it, it wafted into every bunker fortification.

Some of the soldiers of the security regiment who were hiding under the trenches inhaled a small amount of poisonous smoke in their bodies.

These poison gas bombs are the latest secret weapons developed by the Japanese army, which can kill people in an instant, even if it is too late for first aid.

In less than a minute, a group of security regiment soldiers fell under the trenches.

The soldiers struggled on the ground in pain, some soldiers vomited violently, and some soldiers spat thick white foam at the mouth, their limbs twisted and convulsed, and everyone's expression was very painful.

"Uh, uh, uh......"

The soldiers who were injured by the gas bombs struggled for a while before they all died tragically under the gas bombs.

The terrible thing about these gas bombs is not that they are deadly, but that people who come into contact with corpses will be infected in a short period of time.

Many Chinese soldiers on the battlefield did not know the power of the poison gas bombs, which is why more innocent soldiers died.

"It's a gas bomb, watch out for the gas bomb, everyone wear gas masks quickly!!"

Some of the officers of the security regiment shouted loudly at the soldiers of the security regiment.

The soldiers of the security regiment took off the gas masks they were carrying, and quickly put them on their faces, blocking the respiratory tract from contact with the poisonous gas.

"Everyone, be careful, do not touch the corpse, do not touch the skin of the corpse!!"

Several members of the security corps medics hurriedly ran back and forth under the trench to alert the other soldiers.

The medical staff did their best to treat the wounded, but unfortunately, the gas bombs were so lethal that they could not do anything about it.

"Buzz—"

Devil bombers ran rampant in the skies over Nanguan County, dropping a large number of poison gas bombs.

Large expanses of aerial bombs rained down, producing a large number of poisonous gas smoke screens, covering every corner of the positions outside the city.

The gases of these poisonous gases will be carried by the wind and scattered for several kilometers.

Although the toxicity of the smoke is somewhat reduced, it can still kill people if they do not wear gas masks.

Fortunately, Li Hong was prepared to prevent the enemy from using poison gas bombs, and he distributed gas masks to every soldier in the security regiment in advance.

Otherwise, the soldiers of the Security Corps will definitely cause more casualties.

"Quick, quick, use anti-aircraft guns to shoot down the devil bombers in the air to Lao Tzu!!"

Li Hong stood inside the command headquarters, holding a phone in his hand and shouting, personally calling various air defense positions.

The flight altitude of the little devil pilot is very tricky, and the devil plane flies so high that the anti-aircraft machine guns on the ground cannot hit it at all, and can only rely on anti-aircraft guns to strike.

The anti-aircraft machine guns in the hands of the officers and men of the security regiment could not pose a threat to enemy aircraft, and they could only rely on anti-aircraft guns to carry out air strikes.

The artillerymen of the anti-aircraft units of the security regiment quickly entered the anti-aircraft gun position.

The artillerymen were busy in the anti-aircraft gun positions, each of them divided their labor to control the anti-aircraft guns, and quickly aimed and reloaded.

"Anti-aircraft artillery preparation, artillery !!"

Anti-aircraft guns from several anti-aircraft positions of the security regiment simultaneously launched shelling.

"Tom tom!"

"Tom tom!"

Dense shells flew from the ground to the devil bombers in the air.

The air defense units of the Security Regiment were armed with 37-mm and 40-mm anti-aircraft guns, which had a high rate of fire and high accuracy, and had no problem at all in striking enemy aircraft at an altitude of 2,500 meters.

"Bagaya Road, beware of the anti-aircraft guns of the security regiment, quickly maneuver to evade !!"

The devil pilot Shao Zuo noticed the rain of shells coming from the ground, and repeatedly reminded the other devil pilots through the throat microphone.

Immediately, the devil pilot held the control stick of the plane and hurriedly operated the plane to make an evasion maneuver.

Bombers are loaded with bombs, and their agility is not as agile as that of fighter jets, and it is almost impossible to completely avoid all shells.

The bomber group repeatedly changed its movements in the air, dodging the flying shells as much as possible.

Suddenly, several explosions sounded in mid-air.

"Boom, boom, boom!"

Several devil bombers were killed by anti-aircraft guns, and the fuselage was bombarded into several pieces by shells.

Then, another wave of anti-aircraft artillery shells hit, and the shells were so dense that it was difficult for people to breathe.

Several bombers were again damaged by shells, and flames burned in large areas of the fuselage.

The bomber flew in the air for some distance, and soon there was an explosion, and a pile of Martian debris was thrown from the sky.

"Bagaya Road, damn the air defense force of the security regiment !!"

The rest of the devil flew angrily and scolded.

The devil pilots knew that the security regiment had air defense units, but they did not expect that the hit rate of the anti-aircraft guns of the security regiment would be so high.

The Devil bomber group was disrupted, and shells flying from the ground frequently grazed the fuselage of enemy aircraft.

Enemy planes were too busy evading the continuous incoming shells to bombard the air defense units of the Security Corps.

The enemy planes dodged and dodged left and right in the air, and were so embarrassed by antiaircraft artillery shells that the devil flight commander had no choice but to order the group to withdraw temporarily.

"Evacuate, quick, evacuate !!"

The devil group fled in a hurry over Nanguan County.