After a while, dozens of Japanese planes flew over the city of Xuzhou.

The Devil's bombers were afraid of the anti-aircraft fire of the security regiment and kept sailing at an altitude of about 1,500 meters.

The pilots of the devils knew that the anti-aircraft firepower of the security regiment was strong, so the bomber group of the devils did not dare to rashly and easily reduce the altitude to bomb.

"Buzz—"

The devil's plane approached, and the air defense unit of the security regiment on the position outside the city heard the roar of the devil's plane's engine and immediately made defensive preparations.

"Beware of enemy planes, enemy planes are coming, pay attention to concealment, and each company quickly enters the fortifications !!"

When the soldiers guarding the position heard the order, they took up their weapons and quickly drilled into the surrounding bunker fortifications, as well as the anti-aircraft bunker fortifications.

The air defense units of the security regiment entered the air defense positions, operated anti-aircraft machine guns and anti-aircraft guns, and aimed at enemy planes in the air, and as soon as the devil planes approached, the air defense units would immediately strike at enemy planes.

The flying unit of the devil is not stupid, the Japanese flight commander sent several fighters to test the fire.

The leading Japanese flight commander ordered: "Fighter squad, go and reconnoiter the anti-aircraft fire of the Chinese soldiers!" ”

"Ha Yi !!"

Under the instructions of the commander, several devil pilots respectively controlled the fighters and flew over the positions of the security regiment in the east of the city.

Several Devil fighters lowered their altitude by 500 meters and flew at an altitude of about 1000 meters.

The devil fighters were very cautious, and tried back and forth on the periphery of the security regiment's position, so as to force the security regiment's anti-aircraft fire on the ground to be exposed.

The air defense units of the security regiment knew that this was a devil plane testing and reconnoitring the fire on the ground, so the air defense forces did not take a strike.

The enemy planes lingered around the perimeter of the position for a few laps, losing patience, and suddenly, several devil fighters swooped down towards the position east of the city.

"Da !!"

"Sudden !!"

The Devil's fighter swooped down, and at the same time, the on-board machine guns kept strafing the positions on the ground.

At this time, the gunpowder smoke on the position had not completely dissipated, and the devil pilot's vision was blurred and he could not see the situation on the ground clearly.

As soon as the devil pilots opened fire, countless bullets poured down all over the positions on the ground.

Dense bullets splattered on the ground, splashing strings of mud, and the stones were torn apart by the bullets, and sparks flew out.

While several fighters were strafing the positions, the air defense units of the security regiment had already locked on the enemy planes.

The air defense units of the security regiment will only make a move, and if they make a move, they will definitely hit the target quickly and accurately.

"Brothers, take out the plane of the little devils!!"

The order to open fire was given, and gunfire rang out from an anti-aircraft position.

"Da !!"

"Tom !!"

Anti-aircraft guns and anti-aircraft machine guns suddenly opened fire, and bullets and shells flew towards enemy aircraft several hundred meters in the air.

"Baga, be careful, ground anti-aircraft fire strikes !!"

The devil pilots reminded each other and shouted, only to see that several devil fighters were in the air in confusion to avoid fire attacks.

The fire on the ground was fierce and accurate, and besides, the ground opened fire suddenly, and the enemy planes did not hide from time and space at all.

"Boom, boom!!"

Explosions rang out in the air, and two blazing flames burst open.

The two devil fighters were instantly blown to pieces by anti-aircraft shells.

The two devil pilots on the plane were also shattered by the explosion, and the wreckage fragments of the plane splashed down from the sky with flames.

Another Devil fighter was fatally hit by an anti-aircraft machine gun, and its fuselage was covered with dozens of bullet holes.

The enemy plane was badly damaged in many places, and thick black smoke rose from it.

The cockpit was covered with plasma, the Devil pilot's head was blasted open by a machine gun, and the Devil fighter lost control and crashed headlong into the ground.

"Boom!"

There was a loud explosion, and the falling fighter exploded violently, and the parts of the plane fell apart.

The commander of the devil's flight looked at the several fighters that had been shot down a few kilometers away, and was suddenly shocked and angry.

The other party did not expect that the anti-aircraft fire hit rate of the security regiment was so terrible, and in a blink of an eye, three planes were gone.

Although the anti-aircraft fire of the security regiment is accurate and deadly, the devil's fleet will not be evacuated easily.

"Bagaya Road, damn the air defense forces!"

The devil flight commander scolded angrily a few times, gritted his teeth fiercely, and loudly gave the attack order to all the devil pilots.

"Imperial pilots, immediately attack, razing the defensive and anti-aircraft positions of the soldiers on the ground to the ground!!"

Dozens of devil planes scattered to attack, and immediately swarmed towards the positions in the east and north of the city.

As soon as the devil's group flew to the periphery of the position, it launched a fire suppression with airborne machine guns.

The first to be hit by enemy planes was the air defense position that had just opened fire, and this fire position had already been exposed, so it naturally became the preferred target for enemy planes to strike.

"Da Da Da-"

"Tutu Tu Tu Tu—"

Five or six bombers and fighters opened fire at the same time, and countless bullets flew near the air defense positions.

Each anti-aircraft gun and anti-aircraft machine gun was surrounded by thick breastwork walls, as well as strong fortifications, and the devil's airborne machine guns did not pose much of a threat to the soldiers who fired on the ground.

Hundreds of bullets were spilled around the firing point, most of them outside the bunker walls, and some of them went into the bunkers.

"Ahh......h

Several soldiers were unfortunately hit by bullets from enemy planes and fell in pain in their bunkers.

The machine-gun sub-shooter, pushing away the sacrificial machine gunner, took over the machine-gun fire.

Under heavy fire, the soldiers angrily raised their anti-aircraft machine guns and fired fiercely at the menacing enemy planes in the air.

"Little devil plane, don't be afraid of death, just come!!"

A dozen anti-aircraft machine guns on the ground roared, and thousands of bullets flew towards air targets.

The dense bullets were like a shower, forming a huge bullet fire net, spreading the net to attack the flying devil planes in the air.

"Jingle ......"

"Jingle ......"

Anti-aircraft machine gun bullets hit enemy planes, making a metallic crash and sparks.

Large-caliber machine gun bullets easily broke through the armor of the enemy planes, and several devil planes in the air were scarred.

In the face of powerful anti-aircraft fire on the ground, the devil pilot could only control the plane to change various actions, dodging left and right to avoid the attack of bullets.

While the devil planes were busy dodging, the artillery on the ground quickly turned the Bofors anti-aircraft guns to lock onto the enemy planes.

"Tom !!"

Several 40-mm Bofors anti-aircraft guns shelled together, and a volley of anti-aircraft shells flew towards the evading enemy aircraft.

"Baga, beware of the anti-aircraft artillery on the ground!!"

The devil pilots shouted in horror and tried to dodge the anti-aircraft gun hits, but alas, it was too late.

Five or six enemy planes were shot down by shells at once, four were shot down by shells, and two enemy planes suffered wing damage, and the planes swayed in the air and could crash at any moment.