On a battlefield ruled by guns and cannons, individual courage was greatly weakened. No matter how strong one's fighting skills were, they could not withstand the damage of a single bullet.
This was especially true for those soldiers who were of excellent quality and had undergone tough training. They could kill countless enemies with the weapons in their hands.
Under the right conditions, it was entirely possible for one person to kill thousands of enemies.
Even more powerful nuclear weapons could destroy an entire city.
The methods of these mercenaries were actually quite powerful, and they completely met the standards of the battlefield. Some of them were even experienced in battle.
They had thought that they could easily crush the barbarians in their area of expertise.
However, when the war began and the gunshots were heard, they realized that they had made a big mistake.