The Roman Square Pilum was one of the main weapons of the Roman legionnaire.  Every legionnaire was equipped with one or more of these deadly javelins.  During a battle, as the legions would approach the enemy, just before they got into close, hand-to-hand combat, the Romans would throw these pilum at them.  Naturally they’d like it if they killed or grievously wounded that nasty Gaul coming at them, but what they were particularly going after were their shields.  These Roman weapons were made of soft form of bronze that intentionally bent.  When they hit an enemy’s shield, it would bend, making it difficult to remove, and multiple pilum doing this to a shield would render it useless, and that was the point.   If the enemy is trying to yank a pilum out of his shield, he’s not swinging a sword at you and he’s vulnerable to your own attack, all the while you’ve got the advantage of a shield of your own.  Combat tactics such as these, and combined with the innovations in Roman logistics that created a uniform kit of pilum, swords, and armor, made the Roman legions the most feared and eventually the most powerful in the world for a number of centuries before their enemies began adopting such tactics to their own armies.  Having a number of these magnificent weapons in one’s collection will certainly draw a lot of attention and will please any guest who appreciates history and ancient weapons, not to mention having some bragging rights by saying you actually own them.