Halo: The Fall of Reach

Halo: The Fall of Reach is the prequel to Halo: Combat Evolved, and is also the first Halo novel to be published. It was written by Eric Nylund, and published on October 30, 2001.
The novel was reportedly finished in seven weeks, eventually becoming a Publisher's Weekly bestseller with nearly 200,000 copies sold in the United States and United Kingdom.

The novel was reissued in early August 2010 by Tor Books, with the new reissued version including some content updates and additional content. In addition, a comic book adaptation series titled Halo: Fall of Reach, comprising of three story arcs will be published by Marvel Comics and 343 Industries, starting with Boot Camp on September 14, 2010..