Operation: HORIZON

Operation: HORIZON
Conflict:	Human-Covenant War
Date:	Between 2531 and 2544
Location:	Cascade

Operation: HORIZON was an operation of the United Nations Space Command sometime between 2531 and 2544. It concerned the destruction of Covenant exploratory fleet elements near Cascade. John-117 was involved in this operation.

List of appearances

• Halo 5: Guardians
  • Limited Edition (First mentioned)