Ancient wars, the cold war era of the long sword really good in real combat

If you are fighting against a regular army, the longsword is better at piercing, and it is better than the sword for fighting armored soldiers. If you're fighting an insurgent army, a militia, or some other rabble, a sword is good enough. If it is a poorer dynasty, the military expenditure is tight, training is simple and cheap sword is also more practical than the sword. However, the knife chopping power although higher than the sword, but unless the force is very large, or knife injuries are not too fatal, and the long sword through the bear is easy to die