Machete

The  is a bladed melee weapon seen in Call of Duty: World at War, Call of Duty: Black Ops, Call of Duty: Modern Warfare 3 and Call of Duty: Black Ops II

Call of Duty: World at War
The machete is seen in the American levels on Roebuck's back. Other Marines also have machetes in their character models. The machete is also seen in the Soviet campaign being used by Sgt. Reznov in the levels "Blood and Iron", and "Downfall". In the level "Blood and Iron", the machete is held by Reznov at the end of the level, just before the player gets on the train. In "Downfall", Reznov uses the machete to kill the German soldier who shot Dimitri Petrenko. Reznov jumps towards the German, slices, and stabs his victim with the machete, then kicks him off the ledge. He also used it to cut off the Nazi flag. This is the only time in the game the machete is used to kill a character. The machete isn't used at all in the American Campaign and only appears on the character models of some marines.

Call of Duty: Black Ops
The machete makes a return in Call of Duty: Black Ops. Viet Cong will sometimes be seen using the machete for close quarters combat. A pair of machetes are seen being used by Danny Trejo in the trailer for the Zombie map Call of the Dead. The machete is also seen on some of the SOG troops during the campaign.

Call of Duty: Modern Warfare 3
The machete is seen being used by a member of the African Militia in the level "Back on the Grid." As Yuri runs from the militia, he falls through the roof of a shack and is faced with a man armed with the machete, the man attempts to attack him but is shot before he is able to reach him. The machete is unusable, just like the previous games.

Call of Duty: Black Ops II
The machete is seen the first time during the E3 trailer. It's being used by an Angolan soldier in the part of the game in 1986.