Buying OB and initial deployment

[Grumbler]

"I find that if I worry about my opp to much then I end up losing by trying to cover/conter him rather than thinking about what I should be doing (the classic "stareing at the enemies sword problem")."

So you don't believe in 'the crease' do you?

I do. I am playing against my opponent, not his units or the map or anything else. SP is very much a mano a mano thing. One wins by defeating ones opponent. Tanks, planes, infantry, arty, hill, rivers, etc., are just the tools one uses to do the job.
Terrain pretty much dictates deployment. You can maxamize that terrains effects by what and where you deploy. You don't set an ATGM with a minimum range of 2 in a position where it has a max LOS of 1. Not all terrain is equal. My deployment goal is to get the appropiate unit in the appropiate terrain and integrate it with the mission and the other troops.
I do believe 90% of battles are won or lost during purchase and deployment. Make a serious mistake then and you are well and truely hosed.