Insurrection

The Insurrection is an event within the Halo Universe, where rebellious groups on multiple colonies all struck at once, crippling defenses and forcing the UNSC to engage the threat of a full scale civil war.

Locations
A few locations that the Insurrection took place at:
 * Arcadia
 * Reach
 * Madrigal
 * The Rubble
 * Other Outer Colonies

More Information
More information can be found on Halo Nation, here.