My plan usually starts with a recon pull, i.e. send small recon forces down several possible avenues of approach to get an idea of enemy emplacements. Keep most of your force in reserve and when you find the least defended position launch an attack there. I usually also feign an attack at another position- I put units in cover and trade shots, in the hopes that the defender will be too worried about it to reposition his units in front of my real attack, allowing me to flank around them.
The only time I set a plan in stone from the beginning (the command push) is when I know it will be suicide to go anywhere but a single path.
*SPOILERS*
A great example is the first mission of The Scottish Corridor. Reviewing the map you can see the entire left and center approach is a plowed field. You are told in the briefing that a MG bunker is at the crossroads overlooking this field, and there is a hedgerow running perpendicular to the entire thing, as well as buildings behind it. Everything about it just screams KILL ZONE. If I tried to push across it my troops would slog slowly through the mud, tiring quickly, and my tanks would become bogged.
However, on the far right flank there is a narrow wheat field leading up to a hedgerow. Obviously there would be defenders there, but I would be safe from my left because of the orchard and small hedges. The wheat field itself provides concealment, and I could use my tanks effectively from the safety of the road. It should be noted I still put eyes on no man's land, just in case.
*END SPOILERS*
The only real micromanagement I had to do was bounding overwatch. This is time consuming to plot out, but it can mean the difference between a frontal assault being stopped and chopped to bits and making it with light casualties. Someone explained why this was on BF's forums, on the Road to Monteburg thread. The term he used was "fire ascendancy". Basically, the closer you get to the enemy, the more fire you can accurately bring to bear, and as this happens fire superiority shifts from the defender to the attacker. Bounding overwatch is necessary to achieve this especially if you have no hard cover, but even if you do. By only exposing your teams for a few seconds at a time, the defender is essentially playing duckhunt, and suppression and morale penalties are spread amongst your entire force. So no one gets their feelings hurt!
The commander only picks me to get shot at
So basically when I look at a map I think recon pull or command push? When moving my forces I ask, am I completely concealed or not? If I am I don't micro at all, besides plotting a series of waypoints that keep my men in cover. If not, I recon to find out how well defended the unconcealed route is, then create concealment with smoke and/or suppress with overwatch. If I walk into a kill zone I do my best to find cover, suppress the enemy, and assault them. If I can't suppress them I fall back and find another way to go. Like Sun Tzu said, be like water. And stuff. Or don't.
Hope this is relevant