What is correct form for the military press?

There is a lot of discussion on this site about form/technique for bench, squat and deadlift. I am grateful for it and have found it very useful. Little tips like pushing through your heels on squat make a huge difference.

I would like to know about the military press in the same kind of detail. Obviously you just lift the bar above your head, but there's got to be more to it that that! I would like to include the military press into my training and would like to get it right from the start.