Boss Strike 21: Battle of the Five Armies

Overview
Battle of the Five Armies is the twenty-first Boss Strike event, re-introducing Dr. Vogel, Shrow, Sergeant Ludlow, and Yuzul, The Raptor Trainer, and featuring Silver Wolf, Ancient Tech, Sovereign Navy, Rebel, Infected, Raider, and Critter units scaled to each player's level.

Five previously released Boss Strike reward units reappear as rewards during the event. These units are rewarded for completing a certain amount of tiers during the Boss Strike. are rewarded every other tier.

Players had the option to either donate or "FIGHT!" formations made up of enemy units, with both options yielding a considerable amount of that would be added to the guild's Tier pool.

Enemies

 * Level 1-10
 * Level 11-15
 * Level 16-20
 * Level 21-24
 * Level 25-30
 * Level 31-35
 * Level 36-40
 * Level 41-45
 * Level 46-50
 * Level 51-55
 * Level 56-60
 * Level 61-65
 * Level 66-70

Trivia

 * The name is a reference to the movie.