Barracks

"The Barracks allow you to train troops to attack your enemies. Upgrade the Barracks to unlock advanced units that can win epic battles."

Summary
Barracks allow you to train troops using elixir. These troops will be stationed in Army Camps. Barracks are unable to function while being upgraded, considerably increasing the time it takes to train your armies; this should be taken into consideration when decided to upgrade a barrack. You can speed up the training times of troops with gems and there is also an ability to boost troop production for 45 minutes. The boost option costs 25 gems and will increase the speed of the boosted barracks by 4 times.

Trivia

 * Since the 2012 Christmas update, Barracks emit a warm glow when training troops.