The soldiers of the anti-aircraft artillery squad took their positions and entered their respective artillery positions.

"The height of the enemy aircraft is 500 meters, the elevation angle is 37 degrees, and the high-explosive bomb is ready for !!"

According to the firing data provided by the observer, the soldiers of each artillery squad quickly controlled the anti-aircraft guns and aimed at the enemy planes that were bombing indiscriminately outside the city.

"Fire, fire, shoot !!"

As the order for the shelling was given, seven or eight anti-aircraft guns on the tower launched an artillery bombardment together.

"Tom !!"

"Tom !!"

The anti-aircraft guns continued to shell, and the sound of the artillery was very loud.

The rain of cannonballs flew out of the tower intensively, and the shells with gunpowder smoke splashed all over the tower.

The anti-aircraft artillery shells fired extremely fast, flying at a speed of kilometers and flying towards enemy planes in the air outside the city.

More than a dozen devil planes outside the city, more and more daring, actually flew not far outside the city.

At this time, the Devil's aircraft group was bombarding the front-line positions in all directions, and the Devil's pilots did not notice the large shells flying from the castle tower.

The flight altitude of the enemy planes outside the city is basically maintained at about 500 meters, and the distance from the city is less than 2,000 meters.

"Boom, boom, boom!!"

Dozens of anti-aircraft artillery shells whizzed in, rapidly passing by the enemy fuselage.

The rain of shells came too suddenly, and suddenly, the devil pilots were frightened.

"Yaga, be careful of the anti-aircraft guns in the city, and quickly dodge !!"

The devil pilots hurriedly pulled the control stick to operate the plane, dodging the flying shells.

More than a dozen enemy planes made continuous evasive maneuvers in the air, and the group sometimes pulled up, sometimes sideways to evade.

The devil pilot's reaction speed was very fast, and the flight evasion maneuvers he made were also in place, but the anti-aircraft guns fired quickly and intensively, and the enemy planes simply did not have enough time to dodge.

The Devil group dodged the first wave of shells, but as a result, they failed to dodge the blow of the second wave of shells.

"Boom, boom, boom!!"

A series of explosions were heard in the air outside the city, and several dazzling explosions burst into the air.

The wings of both fighters were hit by shells, and half of the wings were completely shattered by shells.

The fighter lost the balance of its wings, like a kite with a broken string, and the runaway plane kept flipping in the air.

"Yaga, get out of the way!!"

The out-of-control fighter jet, spinning in the air, suddenly collided with several other dodging devil bombers.

Bombers carry aerial bombs, and because of the heavy fuselage, bombers are not as agile as fighters.

"Bump, bump, boom, boom!!"

Several loud explosions were heard in the air, and the blazing flames of the explosion seemed to be able to blind people's eyes.

Soon, a number of devil planes were blown apart, turning into a pile of fragments, and clumps of flame fragments flew down from the sky like volcanic eruptions......

The artillery squad on the tower of the city in the distance quickly turned the anti-aircraft guns, and the ammunition men repeatedly reloaded.

"Tom !!"

Anti-aircraft artillery shells flew one after another.

More than a dozen Devil planes, in addition to the downed enemy planes, several Devil bombers were damaged by anti-aircraft guns.

The rest of the devil planes were in danger and were almost shot down by shells.

If it weren't for the devil's pilots' rich flying experience, I'm afraid that these enemy planes would also be doomed.

The remaining devil planes were lucky enough to evade anti-aircraft gun strikes, but the enemy planes were damaged and it was difficult to carry out bombing missions again, so they could only return in a hurry.

After the anti-aircraft artillery attack in the city, the number of enemy planes was reduced by half, and the devil's air firepower was much weaker, which undoubtedly gave the air defense units of the security regiment outside the city a chance to breathe.

The devil planes outside the city were interfered with by anti-aircraft guns, and many of the bombs dropped did not hit the target, far exceeding the bombing target point.

Taking advantage of this opportunity, the soldiers of the air defense units outside the city re-set up their anti-aircraft machine guns and fired back at the enemy planes in the air.

"Da !!"

"Sudden !!"

More than a dozen anti-aircraft machine guns on the ground fired together, and the sound of machine guns was unusually loud.

The flying altitude of the devils is about 500 meters, and the flight altitude of the enemy planes is completely within the range of anti-aircraft machine gun strikes.

The anti-aircraft machine guns fired cross-fired, and the muzzles of the guns were constantly spraying bullets, and the dense bullets hit the enemy planes hovering in the air like a torrential rain.

It was already very difficult for the devil's plane to dodge the anti-aircraft guns, and at this time, with so many bullets flying on the ground, the enemy plane was bound to suffer a catastrophe.

The Devil Group was caught off guard, and the Devil pilots didn't have time to dodge at all.

Countless bullets splattered on the fuselage of the enemy plane, making a "clanging" sound of metal hitting and colliding.

The cabin of several Devil planes was pierced by machine gun bullets, the fuselage was riddled with bullet holes, and the engines of enemy planes were damaged, and they swayed high and low in the air.

"Uh, uh, uh!!"

Several devil pilots were shot by bullets and collapsed in the driver's seat screaming.

The devil planes were not controlled by the pilot, and they crashed to the ground one after another.

"Bagaya Road !!"

Several devil planes were seriously damaged by bullets, and the propellers and fuel tanks of the planes were damaged by bullets.

The devil pilot cursed, and immediately, the two enemy planes frantically rushed towards the east of the city.

The devil's plane was a few kilometers east of the city, and these distances flew in the blink of an eye for the plane.

The devil pilot knew that the plane was out of control, and even if he parachuted, it would be a dead end, so the enemy would make such a crazy move and die with the air defense forces in the east of the city.

"Buzz—"

Two devil bombers flew at a low altitude towards the east of the city, and one of the enemy planes was seriously damaged, and the fuselage was burning with flames and thick black smoke.

"Enemy planes flew over, brothers, hit !! hard"

The officers and men guarding the tower quickly moved their machine guns and opened fire on the enemy planes in unison.

"Sudden !!"

"Tom !!"

Machine gun bullets and shells poured out from the castle towers and swept head-on at the devil planes.

The bomber flying in front was hit violently, the cockpit glass was shattered by bullets, the enemy plane was also hit by two anti-aircraft artillery shells, and the devil pilot was hit by bullets into a hornet's nest.

When the enemy plane was 300 meters east of the city, it plunged headlong into the ground and exploded and caught fire, and the parts of the plane were contaminated with flames and splashed everywhere.

Another devil plane had already flown to the right of the city gate, and it was obvious that it was too late for the defenders to intercept and shoot down the enemy plane.

"Boom!"

The plane crashed headlong into the city wall, the fuselage shattered into pieces, and there was a violent explosion.

The enemy planes flew at full speed, and the flight momentum was very huge, and the strong and towering city wall was hit by the nose and collapsed a corner, and the bricks and stones of the city wall splashed all over the city tower, and five or six defenders died in the plane collision.