Operation: MARSH FLASH

Operation: MARSH FLASH was an operation of the United Nations Space Command in Arizona, URNA on Earth on December 3, 2552, during the latter stages of the ongoing Battle for Earth. A part of the URNA Southwest Campaign, the operation occurred following the destruction of shielded Covenant positions centered around free-fire area OZONE on November 19, 2552. Directed by Fleet Admiral Joseph Harper, Operation: MARSH FLASH was undertaken by the UNSC Navy's Fifth Fleet, resulting in the deaths of clusters of high-value Jiralhanae leadership that were attempting to activate an "artifact" at OZONE.

The success of the operation brought an end to the URNA Southwest Campaign, and thus the Battle for Earth. A report on Operation: MARSH FLASH and the rest of the campaign was later compiled by Admiral I. Zhou.