Vanguard's single-player campaign takes place in 1945 near the end of World War II's European theater, with various flashbacks ranging from 1941 to 1944. The story of Vanguard is told throughout various points in time in a non-chronological order.

Call of Duty is a first-person shooter video game based on id Tech 3, and was released on October 29, 2003. The game was developed by Infinity Ward and published by Activision. The game simulates the infantry and combined arms warfare of World War II.