Middle Earth: Shadow of Mordor - Stinking Rebels - Brand 5 Bodyguards of a Warchief, turning them against him in combat. [Bronze / 20G]

This can only be done after getting the ability to command enemies. You will earn this skill automatically towards the end of the story. The trophy / achievement won't be possible until the end of the game.

Step 1: Command 5 different Captains to betray / infiltrate one and the same Warchief. You need to dominate the Captains in combat, then press triangle (PlayStation) / Y (Xbox) to command them.
Step 2: Complete all the infiltration missions of your Captains (blue symbols on the map).
Step 3: Go to Sauron's Army in the pause menu and click on your target Warchief. 5 of the Captains under your control must be connected to him as bodyguards.
Step 4: Fight the Warchief and press to activate your Captains.