(A Bit of History According to Strongblade)
The Roman Gladius descended from a Spanish weapon became the trademark weapon of the Roman legions. The blade of the Gladius is short and stocky perfectly suited for in close fighting. The gladius was primarily used as a thrusting weapon but the dual edged blade could also be used as a slashing weapon. The sword was ideal for the Romans, who used it while in formation, with all soldiers drawing their swords from their right side with their right hand.
Gladiators adopted a (shorter) version of the gladius as one of their primary weapons and, in a burst of wild creativity, were named after their swords. In fact, the Latin word Gladius translates as sword. Not a lot of creativity there but darn good fighters.
Inspired by Model SBDK-ROMANSWORD