Invasion literature was a niche genre with very little sociopolitical impact.
An invasion is a military offensive in which large numbers of combatants of one geopolitical entity aggressively enter territory owned by another such entity, generally with the objective of either: conquering; liberating or re-establishing control or authority over a territory; forcing the partition of a country; altering the established government or gaining concessions from said government; or a combination thereof
 Saki is one of the exceptions, although his 1913 novel When William Came (subtitled "A Story of London Under the Hohenzollerns") is more jingoistic than literary

