First: Watch your units and especially your helicopters very closely: they do stupid close in brawls all the time. Keep saving every few minutes to reload when your units commit suicide again.
Second: Keep checking the Line of sight and range of you units with the "pos fire" tool.

Get yourself: 2x Bo105 reconnaissance helicopters, 2x Bo105 HOT, 6x Artillery in Echo.
Temporarily secure Charlie with 1x SAM + 1x AAC + 1x reconnaissance unit
Right when the mission starts Attack the enemies artillery with your helicopters, then retreat to Kilo. Keep Kilo and India clean by using artillery and helicopters.
Only some of the areas give you command points, do not hold those that do not. Romeo, Sierra, Quebec are easy to defend and give points. Of the areas in the south-west only Echo gives you two measly points.
After spending all your CP move all your units to the south-eastern areas. After you are well setup secure Kilo and India for the win. You must have two reconnaissance helicopters to do so because ground units can not see over the verge\edge.