Chi Rho

Chi Rho was a human colony world in the Ectanus 45 system. It was one of the worlds said to separate the Inner Colonies from the Outer Colonies.

History
In 2535, during the Human-Covenant War, following the loss of most of the Outer Colonies, refugees had started flooding the planet and all available space was being used for victory gardens and refugee camps. Vice Admiral Jean Mawikizi resolved to make a stand against the Covenant on Chi Rho, digging in deep within the planet's crust to survive a glassing attack, forcing the Covenant to come down and flush them out man-to-man.

Locations

 * Bacigalupi Memorial Nature Preserve
 * Camp Patmos

Trivia
The name "Chi Rho" could be a religious reference. In Catholicism, the symbol of the letter X combined with the letter P, called chi-rho, stands for the first two letters of Christ in Greek. It is the reason that Christmas can be abbreviated as X-mas.

List of appearances

 * Halo: The Cole Protocol