Once the clock hits 1205 you'll be able to build High Era units, Late Era is 1320 I think (I hardly ever play up to that time).

Keep in mind that there are also some units you will LOSE the ability to use as periods advance.


MTW is a great game but it is a bit crashy at times, for instance whenever I quit to menu to save game I do so knowing it may just well crash.

And I've had an additional problem when loading battle screens the whole monitor sometimes goes black except for a little white box with 'Sync. Out of range' in it. though I suspect this may be peculiar to my comp and not the game so don't worry too much about it