Moroni made it look like 8 battles.
The 8 Battles of the Penultimate Jaredite War
Tag: Eight
Nephite Money was Base 8 (and possibly Jaredite)
Jaredite influence and obsession with 8 might have made it into Nephite money.
The Jaredites’ Eight Days to Destruction
It took 8 days for the Jaredite final battle.
Science Is True and the Church Is Too 