Call of Duty 2020 is seemingly being teased in Call of Duty: Warzone, as players are reporting a brief glitch/scrambled message appearing in-game that says, "know your history." As reported by DualShockers, players, including @NutterButterAF and Dr_ Diappoint, have encountered this message that also contains a Russian phrase that translates to "doomed to repeat it." Cod 2020 teaser in warzone!!!