Watchtower Bunker

State of Repair
Level 1 & 2 = 
 * -|Level 3 & 4 =
 * -|Level 5 & 6 =

Additional Info

 * Units receive a 50% range boost and 40% damage boost against Aircraft when in a Watchtower.
 * A Level 2+ Standard Bunker is required to convert it to a Watchtower.
 * Upgrading the Level of the Watchtower increases its Capacity.
 * Units in the the Watchtower do not take up room in the Base Defender Platoon after the 9th of January "Calling In Reinforcements" update.
 * At higher levels Watchtowers become tougher compared to similar level Bunkers.  At Level 6 they have 80% of the health of a  Standard Bunker, while at Level 4 they have only 40%.
 * The Stronghold was introduced as part of the "Strategic Bunkers" Game Update: Jan 22, 2013.
 * The Watchtowers can be easily taken down by 18 Thunderbolts of Level 3 Veteran then the player may use 17 Gold to repair the then repeat the step until all the Watchtowers is taken down.

In-Game Quotes
"Troops rely on a bunker when the going gets tough. Upgrading this defensive structure increases its capacity and defense."

- In-game description

"The Watchtower adds 50% range boost to all units inside. It also increases damage by 40% against air (but 0% increased damage vs land)"

- Kixeye description