Invasion literature was influential in France in shaping politics.
The author, like many of his countrymen at the time, was alarmed by Prussia's successful invasion of France in 1870, defeating Europe's largest army in only two months
 In the 1960s, the invasion literature enemy changed from the political threat of Communist infiltration and indoctrination from and conquest by the Soviets, to the 19th-century Yellow Peril of "Red China" (the People's Republic of China) who threaten the economy, the political stability, and the physical integrity of the US, and thus of the Western world

