The Acinaces Dagger was one of the Ancient Daggers was originally used by the Scythians that were from the Eastern Mediterranean Region. Later it was used by the Persians and finally the Greeks. The Persians however were the culture that made this weapon famous. Later, the Chinese used the design of this weapon as a prototype to develop other similar weapons. This Dagger is commonly referred to as a Short Sword, so you may hear this terminology being associated with it as well.
Typically the Scythian Acinaces Dagger measures in at 14-18 Inches. This is a double edged weapon. While there is no specific design the guard is usually lobed which means it is shaped somewhat like a Glacier. The Hilt of this weapon is shaped like a Bollock Dagger, with two oval swellings around the guard which mimicks a males private parts. The Scabbard is the one part of the weapon that makes it really stand out. It is a large pretty mount which allows it to be worn from a belt on the right side of the person wearing it.
The Scythian Acinaces Dagger is primarily a thrusting weapon. Since this weapon was usually worn on the right side, it was used with the sword blade facing down to be drawn quickly in the event to throw the enemy off guard and to execute a quick surprise attack. All of the ancient literature found on this weapon say it was a Persian Sword. The Greek and Romans claim that this weapon was given out to special people by the king as a gesture of favor.
The Acinaces Dagger is curved like a Scimitar. A Scimitar is a curved blade sword and is from Southwest Asia which is the Middle East. Scimitar can mean any sword from the South Asia or Middle East as long as it has a curved blade. And most have a ridge at the end. Scimitars came into action during Horse Warfare, because these weapons were light in comparison to the larger swords of the time. Because of the curvy architecture, they were ideal for slashing people when on horseback.