From: Beijing, China
Well, they are referring to a trick called HQ swapping, of which I tend to be a bit suspicious. I probably don't understand it totally, and if later it does appear to be useful, more likely than not I'll be happy to use this trick, if my opponent allows of course.
I've no idea how HQ decides the amount of its fuel dumps. Would be something worth studying, though currently I don't find it very necessary.
What contributed more than anything else to the Axis logistics in this game, in my opinion, is the speed of rail repair. Especially I made full use of auto repair, an aspect I used to neglect. The attached pic is an illustration of my point.
So all in all, no big secret or fancy tricks. Just a fast forward rail line is the answer. I'm glad finally these Army HQs have jobs