The Warsaw Pact is a military alliance created on May 14th, 1955 after West Germany joined NATO. The Warsaw Pact serves as a supporting antagonist faction during the Cold War in Call of Duty: Black Ops, Call of Duty: Black Ops II and Call of Duty: Black Ops Cold War. After the Soviet Union had started to withdraw from the Eastern Bloc, the Pact began to weaken into the 1980s. Once the Eastern Bloc nations underwent social revolution in the late 1980s, the Pact formally disbanded in early 1991 prior to the dissolution and collapse of the Soviet Union. In Call of Duty: Black Ops Cold War, they are a playable faction and face against the NATO in Multiplayer.