If you guys got good commanders skills tell me off. Just don't sink my boat (aka tell me do this, do that. tricks. Just don't demean me)
I finished GC1 and GC2 but GC1 is harder because your outnumbered and enemy turrets will pratically murder you not to mention infantry can just take potsots at your tanks (the ones that shoot explosives not machine gun bullets because you won't be using those later on, they seem to blow up even faster).
Infantry are the best units in the game. Little ever hits them and incrediable good at scouting. So use the infantry to find the turrets then shell the turrets with artilery. The later missions aren't really as hard as they are about inching your way to end of the mission. You have to do it very slowly, keeping a mixed force of heavy tanks and machine gun tanks to fend off any surprise attacks. Aerodynes are okay to have around but they are no help against most bases since most bases generally have AA guns. later on you do get bombers that drop nukes but they are still just as fragile. Using the special ablities of units also helps you should you screw up and end up in a full fledge firefight. For example the main battle tank can drop a repair pole into the ground that will repair any nearby units.
P.S I Know i just replied to my own post... but it just to help others.