Originally posted by Nuclear Flamingo:On the bottom left corner of the screen, there should be a window with many icons on it. To the right of the flask, representing science, you'll see a series of three tanks, each with a different mini-icon on the bottom right of the tank. The first one is to build units. To do this, select the type of unit from the many catagories available and click the green arrow on the right. They will automatically deploy themselves.