I am new to the game, just an hour or so started playing actually. I am a bit at a loss because the game had me build four Barracks however when I try to train more than one set of warriors it directs me to what I am already training. What is the purpose of having four barracks when I can only train on one of them? Is this supposed to happen? All four barracks I've upgraded to rank three, but that doesn't seem to help it either. I can't seem to train more than one 'batch' at a time. Any advice will surely be appreciated.