From Halopedia, the Halo wiki
The year 860 BCE is a year in the 860s BCE in the 9th century BCE.
- Circa 860 BCE, Anvarl becomes a location of strategic importance in the War of Beginnings. The San'Shyuum arrive at the planet and descend to its surface in an attempt to claim the world's Forerunner artifacts from the Sangheili. During the Skirmish of the Planet of Blue and Red, High Lord Mken 'Scre'ah'ben witnesses field commander Ussa 'Xellus' talent as a military strategist.
- Halo: Broken Circle, Prologue