Gates shifted around the question artfully, but I want to answer it. 1/14
But I don't actually think that's the answer. I think the simple answer is... 2/14
Let me outline the history of that... 3/14
We first start to see drill - albeit dimly... 5/14
So individual/unit drill - that kind of 'practice' for battle - is a fairly late development; it post-dates cavalry, catapults, h. inf., etc 7/14
And that comes even later. 8/14
The key institution for that kind of planning is the General Staff. 9/14