What is triangular bayonet?

A triangular bayonet is a type of bayonet that has a triangular blade with three sharp edges. It was first introduced in the 18th century and was used primarily by the British army. The triangular shape of the blade is designed to increase the bayonet's effectiveness in thrusting, as it can penetrate deeper into a target than a traditional round or flat bladed bayonet. Despite its initial success, the triangular bayonet fell out of favor in the late 19th century and was replaced by newer designs. However, it remains a popular collector's item among military history enthusiasts.