Invasion literature (also the invasion novel) is a literary genre that was popular in the period between 1871 and the First World War (1914–1918). The invasion novel first was recognized as a literary genre in the UK, with the novella "The Battle of Dorking: Reminiscences of a Volunteer" (1871), an account of a German invasion of England, which, in the Western world, aroused the national imaginations and anxieties about hypothetical invasions by foreign powers; by 1914 the genre of invasion literature comprised more than 400 novels and stories.