This is a very simple game that doesn't need a lot of doing to figure out. There's a few good things here to start with but now that it's been proven I think you could do better.
The easiest way to win this game is to go for about ten minutes at x8 speed and spawn a warrior building in the enemy camp and spawn 20 knights at once. I think if you worked in some kind of territory aspect that it would make the game more strategic and involved.
I don't see the reason why I would make multiple warehouses/central buildings when it doesn't speed up the gathering of resources. The sword button opens up sliders that apparently do something but I can never tell what it is. A manual pdf would be really swell.
Overall it's great to have a simple RTS to kill some time but it's not totally cohesive and is just a little too simple. I hope you update this or iterate on it in a sequel because I'd like something more like this in the future.