A Bayonet is a knife, dagger, sword, or spike-shaped point blank ranged weapon designed to fit on, over or underneath the muzzle of a rifle barrel or similar weapon, effectively turning the gun into a spear. It is a close quarter combat or last-resort weapon.
The Bayonet is featured in the Battlefield 1942: The Road to Rome expansion as a melee weapon mounted on the Engineer kit's un-scoped No 4 and K98 rifles, replacing the combat knife. Switching to the bayonet still allows the player to fire their weapon, but it disables the ability to aim and replaces it with a fast melee attack. Unlike the combat knife, the bayonet is always a one-hit kill.
In Battlefield 1943, the bayonet is the melee weapon issued to the USMC (M1 variant) and the IJN (Type 5 variant) Rifleman kits and the USMC Scout kit.
For the Rifleman kits, it is mounted on the end of the rifle which gives it a bit of extra range compared to other melee weapons. For the USMC Scout kit, it is handled like a short sword, like the Type 94 Shin Gunto. Being a melee weapon, a hit will result in a guaranteed 1 hit kill.
The bayonet has penalties for weapon handling, making it slower to wield the weapon, and with altered recoil. The bayonet also prevents other accessories from being mounted to the barrel, although there are currently no other such modifications available.