Describes the competition between Coca-Cola and Pepsi-Cola. Provides a summary of the history of the soft drink industry prior to World War II, and over the period 1950-1990 in greater detail. Major strategic competitive moves and countermoves are described. Also profiles industry developments, including the Pepsi Challenge, the reformulation of Coca-Cola, and the consolidation of the bottler network. Provides a teaching vehicle for analysis of competitors and strategic rivalry. An updated and revised version of an earlier case.