The Tomorrow series is a series of seven

Heptalogy

Heptalogy is a rarely used term for a series of seven creative works that are connected by a common storyline. One recent famous example is the Harry Potter series of books. The term is sometimes found in the nonce form septology, or in the form septet....

 young adult invasion novels

Invasion literature

Invasion literature was a historical literary genre most notable between 1871 and the First World War . The genre first became recognizable starting in Britain in 1871 with The Battle of Dorking, a fictional account of an invasion of England by Germany...

 written by Australian writer John Marsden

John Marsden (writer)

John Marsden is an Australian writer, teacher and school principal. Marsden has had his books translated into nine languages including Swedish, Norwegian, French, German, Dutch, Danish, Italian and Spanish....

, detailing a high-intensity invasion and occupation of Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 by a foreign power. The novels are related from the first person

First-person narrative

First-person point of view is a narrative mode where a story is narrated by one character at a time, speaking for and about themselves. First-person narrative may be singular, plural or multiple as well as being an authoritative, reliable or deceptive "voice" and represents point of view in the...

 perspective by Ellie Linton, a teenage girl, who is part of a small band of teenagers waging a guerrilla

Guerrilla warfare

Guerrilla warfare is a form of irregular warfare and refers to conflicts in which a small group of combatants including, but not limited to, armed civilians use military tactics, such as ambushes, sabotage, raids, the element of surprise, and extraordinary mobility to harass a larger and...

 war on the enemy soldiers in the region around their fictional home town of Wirrawee. The name of the series is derived from the title of the first book, Tomorrow, When The War Began.

The books in the series were originally published from 1993–99, by Pan Macmillan and have been reprinted sixteen times.