Bingowings said:

If the Imperial forces are to be reduced perhaps removing the line about the Emperor sending a legion of his best troops should be dropped as there aren't enough troops to back up that boast in the current version as it is.

In your version these could just be the original garrison guarding the shield generator but tipped off that the Rebels are there.

Sounds like a good idea. I will have a bash at that tonight and if I can do it without being too choppy I will certainly include it in the final version.