Yes, the gladius is considered a type of short sword. The gladius was a primary weapon used by Roman soldiers during ancient times, particularly during the Roman Republic and Roman Empire periods. It is characterized by its relatively short length compared to other types of swords.

The typical length of a gladius sword ranges from around 50 to 65 centimeters (20 to 25 inches), with variations in different historical periods and types of gladii. The gladius has a straight, double-edged blade designed primarily for thrusting attacks, though it could also be used for slashing and cutting techniques.

The compact size of the gladius made it ideal for close-quarters combat and formations, such as the Roman military's famous "Testudo" formation. Its shorter length allowed Roman soldiers to maneuver effectively in tight spaces, such as in densely packed battle lines or within fortifications.

The gladius had a significant impact on the tactics and success of the Roman legions. It became synonymous with Roman military prowess and the disciplined combat strategies employed by Roman soldiers.

It's worth noting that variations of the gladius existed, such as the earlier "gladius hispaniensis" and the later "gladius pompeii." These variations had slight differences in blade shape, hilt design, and overall dimensions, but they all shared the common characteristic of being short swords used by Roman soldiers.

Today, the gladius remains an iconic symbol of ancient Rome and is highly regarded as a historical and collectible weapon. It is also utilized in reenactments, historical martial arts, and stage combat performances.