What is the best strategy when using the Ghost Armor?

The stealth ability doesn't shut down at the end of your turn, but the end of the enemy's turn. This makes it extremely effective in several ways.

1. Scouting
   • I like to equip a support class with this armor. The movement bonus from the armor, along with the base +3 movement distance, means he can move an insane amount per turn at 0 risk at all.
   • When you are cloaked, you will not trigger an AI reaction when exposing enemies, allowing you to get in 1 free shot while they are completely in the open.
   • If you have snipers with squad sight (and especially if they have double tap), they can easily take out entire enemy groups before they have a chance to react at all.
     
     
2. Aggressive Positioning
   • Getting my heavies in position while they are stealthed means the next turn, when the stealth wears off, they are very close to the enemy and can double tap and/or start off the fight with a rocket.
   • Assaults with shotguns also benefit greatly from being able to get in close to use rapid fire on a big enemy, taking it out in 1 turn.
     
     
3. Missions
   • You can safely deactivate bombs and rescue civilians while in complete stealth.
     
     
4. Oh crap moments can be preserved if you know your unit is heavily overexposed, you can make them go stealth and survive the turn. Also its good for low health units to hide in stealth mode so they don't die.

This is all in addition to the other stuff armor comes with: the grappling hook (allowing your units to gain high elevation and tactical advantage), improved defense, and extra movement speeds. Overall this is my favorite armor in the game.

One more useful use of Ghost Armor that has been very handy for me is to stabilize fallen soldiers. I always give my support units Ghost Armor so they can cloak, get to exposed fallen units, and stabilize them. Stabilizing and using medkits doesn't end the cloaking. No matter how badly positioned a hurt or fallen unit is, a support unit can safely get to them.

Ghost armour makes room breaches trivial - just Ghost up and move all your troops into the room on one turn and get the aliens in a cross fire. Next turn they will uncloak after the aliens move and you have free shots.

If you ghost through any doors ensure non-cloaked soldiers won't been seen as you open the door