Dagger
A Dagger is a small bladed weapon less than 30 centimeters long. For sake of simplicity, this will also cover various knives which serve the same role,
Uses for daggers
Most daggers are effectively scaled down swords, sacrificing reach for light weight and ease of carry and storage. As such, while they can slash, they are mostly used for stabbing.
For the most part, the main use of daggers was as a fallback weapon for soldiers in case they lost their heavier sword, maces, spears or whatever and as a concealed weapon for defensive or offensive fighting. {Stub}