Barracks

Overview
The Barracks allows the player to train units. Each unit has an individual cost and construction time. You unlock more units as the game progresses with each level, and upgrading the building. Owning two of these is one of the achievements. (double barracked) With the inexpensive cost and ease of this building, it was a favorite tactic to only build a Barracks for as long as you need it, then to get rid of it to free the 1 worker assigned to it. Ever since they allowed things to be turned off and then on for workers to be freed, the Barracks is not required to get sold to reclaim all the workers. It remains a tactic, but not one which is as necessary as before. Also, selling and rebuilding your Barracks is more impractical with the 1.5 Patch, as when you rebuild it, you will have to spend the time and resources to level it up over and over again, until you reach the level it was at before you sold it.

At Building Level 10, the building begins to reduce the cost of training soldier units, in addition to the reduced training time. The investment will go a long way, especially if the Barracks is heavily utilized. This resource cost reduction affects Bars and Chem Vials, but does not reduce the Nanopods cost for premium units.