The combat knife was a melee weapon used for slashing and stabbing.
The combat knife was a simple weapon, with little to no high technology involved in its construction. It consisted of a single-edged blade attached to pommel of short or medium length. They could be found at very cheap prices on specialized markets and were easy to conceal due to their relatively small size.
The blade used the wielder's own strength to cut and slash, and the since it did not rely on any sort of vibro technology, it was completely silent.