Game Log XCOM2 – 002
One of the first enemies you'll encounter in XCOM 2 are the Sectoids. They are a pain because they have the ability to mind control your units. They can also reanimate dead units on the field, including your own dead allies.
One way to break their mind control link, or to stop their reanimated zombies is to kill off the Sectoid.
Another, probably easier way, is to disorient the Sectoid. You can do this by tossing a Flashbang Grenade in their direction. While this won't kill the Sectoid, it disrupts them enough that their mind control ability stops working and their reanimated zombies just die off.
I would like to end this post with a short gameplay clip of this pretty fun tactical game.