BARRACKS

Aside from just being the place where you train troops, Barracks also help to determine how many troops you can train and how fast you can train them.


TRAINING QUEUE

Troop training following the 1-2-4 training pattern

Your training queue, or number of separate groups of troops receiving or awaiting training, is determined by the number of Barracks you have in your city.  For instance, if you have 15 Barracks in your city, you will be able to queue up 15 groups of troops to be trained.

TIP:  Try to keep your training queue(s) as full as possible at all times so that you have uninterrupted training 24/7.  A system I use to quickly fill my queue(s) and keep them full is to follow a 1-2-4 training pattern.  I begin by training one group of Tier 3 troops, then two groups of Tier 2 troops, and finally four groups of Tier 1 troops.  Since the Tier 3 and Tier 2 troops take longer to train, they create enough of a log jam for me to fill my queues.



BARRACK'S EFFECT ON TRAINING SPEED

Barracks have a two-fold effect on training speed.  First, training speed is increased according to how many Barracks you have in your city.  Secondly, training speed is increased as you level-up your Barracks.  As soon as I can, I will post the exact amount of those increases here.

PLEASE NOTE:  I have read claims that the increases in training speed gained per Barracks are on a sliding scale with increases diminishing as more Barracks are constructed.  Since I began this blog long after my Barracks were built, I cannot say exactly how much training speed increases per Barracks and per Barracks level until I begin construction on my third city. 

What I can say now is that when I constructed a 16th Barrack in one of my cities, I immediately received an increase in training speed of roughly 4% and as I leveled-up this Barracks, my training speed increased roughly 1% per level.