Yeah Bob,
I agree. In the British army we call this keeping one foot on the ground! You don't move any part of your fireteam unless it has covering fire from its mutual support.
I've found with this game that similar to real life, if you take a step back sometimes and just concentrate on command and control of your fireteams, and don't get to involved yourself, you will have far more success.
However, I agree with Raptor when he says it is rather scripted at times. There are some missions where success depends on your sole actions and not the fireteams you control. That said, in this kind of game you just don't get that kind of freedom and should be expected.
Its still superb though, finished it last night and its left me wanting more! Can't wait for the next one, due in the autumn!!
Regards....Dave S.