Bayonet: A simple knife attached to the barrel of a gun, the bayonet gives soldiers another option in case of close combat or when they are simply out of artillery. The bayonet gained popularity in the later half of the 17th century with armies across Europe adopting the ingenious weapon. Armies around the globe use it even today as a weapon of last resort. When you’re out of bullets and grenades, it’s time to slap on your bayonet, kiss your fear goodbye, and charge the enemy baying for their blood.