Reincarnated into a Game As the Hero’s Friend

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The demon army stopped in their tracks.
As expected, after falling to Welner’s tricks many times, they had learned their lesson.
After a short time passed, the metal rods exploded and white mist filled the area.

These cylindrical-shaped objects were modified magic stoves or, in principle, it was closer to the magic kettles.
The water inside was constantly heated, making it expand until finally the specially made container exploded (or leaked) and produced this white mist, which was the water vapor.

The vapor limited the sight of demons inside it, but that was all.
Although the vapor was hot, it couldn’t harm the physically strong demon army.
The vapor slowly disappeared because of the wind, leaving the demon army completely unharmed.

When the vapor cleared up, the demon army started to run again.

Just as they ran some distance, some members of the demon army started to scream, including Gezarius, who was leading the army in the front.

Welner merely created holes filled with spikes and covered them with soft soil.

After thinking that whatever Welner was planning with the explosion had failed, the demon army let down their guard and confidently rushed to the town without being careful of their footing, causing their feet to step on the hole traps that Welner had prepared.
From the beginning, the explosions were to distract demons, not to harm them directly.

The demons whose feet were pierced by the spikes writhed in agony.
The spikes were also covered with barbs, so it was hard to pull them out.

The spikes deeply pierced Gezarius’s foot because of his heavy body.
The humiliation that he felt after being caught by these kinds of simple traps would not disappear easily.
His anger and impatience robbed him of the ability to deal with the situation calmly.

Another reason for demons to fall for this trick was their attention to the conspicuous moat that surrounded the town.
Demons felt that Welner must have done something to it.

It would be easy for the demons who had superior physician capability compared to humans to jump over the moat and large holes.
In addition, it would take more effort to hide large holes, so Welner chose to create many small holes.
The principle of Welner’s trap was like the principle of a minefield.

Because of the traps, the demon army became disorganized.
Some sporadically kept approaching the wall while some stopped because their feet were pierced by spikes and they were busy dealing with them.
The situation of the demon army was chaotic, and it was at that moment, the human army started their attack.

“Fire!!”

At Kesten’s command, the arrows from the crossbows, roman lead bullets from slings and the rugby ball-shaped metal ammunition from the catapult started flying toward the demon army.

(T/N: Roman lead bullets are bullets used by Rome for slingshot.)

A direct hit from ball-shaped metal ammunition at a fatal location would kill demons with no problem.
As for roman lead bullets, being hit by them would cause a lot of pain.

But that was not all.
Several members of the demon army had died and become literal porcupines as the arrows rained down on them.
Even Gezarius couldn’t help but to stop moving as he couldn’t process what had happened in front of his eyes.

On top of the wall, Kesten was giving instructions to the archers using the magic tool devised by Welner.
Although Kesten’s face was calm, he too was shocked inside.

The red light from the magic tool shaped like a stick pointed to a certain demon that had gotten closer to the wall.
Seeing that light, the archers immediately focused their attack on that demon and the demon died on the spot.
Once again, Kesten masked his shock with a calm expression on his face.

This magic tool was basically a modified version of the magic lamp.

In a defense battle, it was very hard for all archer groups to concentrate their attacks at one point because of difficulty in relaying commander’s orders to all archer groups fast and accurately.

After all, the actual battlefield was filled with shouting, screaming, the sound of metals hitting each other, sound of stones and even the sound of bodies rolling on the ground, so even if the commander ordered ‘Attack this spot!’ only the archers in the commander’s vicinity could hear it.

In addition, a skilled archer didn’t mean a skilled commander or tactician.
Moat archers wouldn’t be able to ascertain the enemy’s weak point in the middle of the battlefield and then attack that weak point without being ordered by the commander.

The case of mages on the battlefield was even more serious.
Many mages were inexperienced in the battlefield and they could only decide to attack based on stuff like ‘this guy has a best-looking armor’ or ‘Just use my most powerful magic to the enemy’.
Only a few people with both experience and talent could ascertain the enemy’s weak point in the middle of the battlefield.

But with the laser pointer-like magic tool created by Welner, the skilled commander or the tactician could pinpoint the enemy’s weak point using the magic tool as a signal for everyone to focus their attack in that place.
Although this method was not completely foolproof, it was much better than current solutions.

This magic tool was kept a secret for a while, but 20 years later, it became known to the world in a dispute with the neighboring country, as that country’s king’s younger brother, who was the army commander, became a literal porcupine.
The tactic was later known as Zeavert house’s light pointer tactic.