Unconscious

To knock any unit unconscious, its stun damage (grey inner bar) has to exceed its health (red outer bar). Thus a shortcut to unconsciousness is to have friends lightly wound the unit to reduce its health (eg with a few pistol rounds) before or after hitting it with your stun weapon. Tricky but it can save your life.

Stun damage weapons

• Stun Rod, highly accurate hand-to-hand combat, although few soldiers will gladly accept the chance to poke a dangerous alien with a stick, and large aliens will take a few pokes.
• Smoke inhalation (does not affect sealed Power Suits or robots), approx 2 points/round
• Small Launcher firing the area-effect Stun Bombs

Recovery

Stun damage fades slowly, approx 5 points/round. Medi-kit stimulants will counteract stun damage on application. To revive an unconscious unit, stand on the square where their body is lying and use the medikit until it can't find a target. The revived unit will be standing nearby without any equipment.

Units that wake up cannot wake up on the same tile as the person applying the medication. Instead they will often wake up one tile to the north. If that space is occupied then the unit will attempt to appear in the next tile in a clockwise direction until a free location is encountered.

Units that get picked up and stored in a soldiers inventory will wake up with the same conditions. Curiously enough, if the unit holding the unconcious body is flying in the air, the stunned unit will wake up and stand in mid-air. This unit will stay up in mid air until given a move order. This bug cannot be exploited to set up floating snipers as equipment cannot be passed to the unit.

One word of caution: If the unconcious unit is an alien and it has a melee attack, like the Chryssalid (UFO) or the Lobster Man (TFTD), it will be in a perect position to attack you if you've been carrying it and it wakes up.

One additional word of caution: Do not by any means place an unconcious unit in your unit's hand slots. If they wake up they will no longer physically exist in your soldier's hands, but on the battlescape controls, it will appear as though they are still there. Like all other bugs that cause a similar phenomenon, do not click on them to bring up the attack mode menu. This will crash the game. Go into the inventory and place an item in the hand and this will clear this error.

Unconscious Aliens

• can be identified by type and rank when picked up (move a soldier to the same square, switch to inventory screen).
• could still wake up, but tend not to pick up weapons. Aliens with melee attacks or built in weapons will continue to use them where possible.
• can be made unconscious if already half-stunned, by a small amount of damage that knocks their health below the stun level. Pistols suggested.
• attract other roaming aliens. Can be used as ambush bait eg if boxed into the Skyranger [Xeno]
• Unconcious bodies of any type will die instantly when hit by explosives - regardless of how resistant they are or how strong their armour is. IF, for any reason, you wish to actually kill them instead of taking them prisoner.
• Large, 4 square, aliens NEVER wake up from unconsciousness. Ever. Occasionally a quarter of the unit may not fall unconscious - but this is not common although has been known to happen.

Unconscious Soldiers

• can be revived by Medikit Stimulant (rate TBD)
• do recover on their own
• can be carried or thrown like objects
• can be thrown up or into inaccessible areas, see Grenades
• continue to suffer from fatal wounds

Knocking a unit unconscious actually replaces it in the game with an "unconscious unit type item". Associated bugs include cloning a soldier where one clone awakens as the other dies, and extinguishing a soldier on fire by knocking him out.