Captain America's shield was him main weapon.
Captain America's shield was his main weapon. It could be thrown to knock enemies down and return to him. It could also be used to shield himself from attacks. In later issues it is revealed that the shield is made of Adamantium and Vibranium which makes it near indestructible.
- In Captain America #1 the shield was triangular. When Stan Lee started to write for Captain America he made the shield circular and also came up with the idea that the shield could be used as a throwing weapon.