On the other hand, it's just as canon that war experience and a decade of augmented training prior to that < a youngling Initiate during Order 66.
Though at least what you describe is pretty much the why of the clone army in the first place.
P.S. I just had the vision of Emperor Palpatine giving his Declaration of a New Order speech from a Venator with a " Mission Accomplished " banner in the holofeed background...
Huh, I always saw Palpatine as more "Hope and Change" kind of guy.