Halo: First Strike

Halo: First Strike is a military science fiction novel by Eric Nylund, based on the Halo series of video games. The book was released in December 2003 and is the third Halo novel; Nylund's second contribution to the series. The novel serves as a bridge between the events of the games Halo: Combat Evolved and its 2004 sequel Halo 2. First Strike was also released as an audiobook, narrated by Todd McLaren.

Halo: First Strike opens with the arrival of the Covenant armada at the human stronghold planet of Reach. The book follows both the unsuccessful attempt to defend Reach by the SPARTAN-IIs who were on the planet's surface and the adventures of the rag-tag survivors of the battle at Alpha Halo. The book also reveals that humanity's worst fear is going to come true: the Covenant is on its way to Earth. The book was well received by critics and sold well, making The New York Times Best Seller list. Critics found it added depth to the Halo video games and that it was exciting throughout.