Well, there's not much of a strategy in this level.
But i tell you what i did..beat both NATO and China in my 1st try
Recommend : -Lieutenent General
When you first drop in, look in front of you(wait for 5 sec cuz the guys won't spawn till then) you will see an A.I. manning a turret, take him down, then put out ur parachute to land faster. :I blew the one on the right 1st: Cautiously move up and use as much cover as possible ...peek around the corner and look for enemies instead of charging up like previous missions...b4 you run up the hill, there should be 2 guys around, 1 on the right behind a piece of metal and 1 on the left. take them down and make sure you reload afterward since you are about to tackle the silo base. when you make it up the hill, make sure you take out the left side turrets(ignore the right side until you make it next to the entrance and finish him off...there shouldn't be anyone on the silo base and your guys should start spawning on the silo.
Go down the tunnel with extreeeeme cautious and peek around the corner before you proceed to the next hallway...keep going down until you make it in to the tunnel b4 the control room...stick your body as close to the wall as possible, crouch, and start shooting them and move forward slowly after you finish majority of them. Before you enter the room, stick your body to the left side of the wall and look at the right, there should be an A.I., X, waiting for you w/ a shotgun, watch out for that...oh, just another tip, when you reload, you can hide behind those metal plate thing that stick stick to the wall locate along the hallway.
Control room
x
--- ------ ------
l.................... l
l=................=l
l
<--you l
l =l
when you enter the room, the A.I should stop spawning and watchout there's a possiblity of an A.I. behind those Cargo boxes. Just go in and arm the explosive.
Do the same thing to the 2nd silo but instead, kill the turret on the right side along w/ some A.I.s (3 i think and they should be easy target since they all cluster together.
:hint: on the way to the 2nd silo , there should be couple snipers spawn over the place where you first drop in, you could use the GPS just to make sure nobody is in your path toward the 2nd silo:
After you blew up the 2nd silo, hotswap back to the "starting point" and there should be tanks coming in to "aid" you. Drive the tank, up the hill where you see the tower(ignore the enemy tanks), shoot the 2 guys stationed up the hill and move on w/ your assault character.
:hint: you might not be able to make it w/ the 1st one, don't worry, i still managed to finish commander 31 w/ my 4th tank. :
keep walking up and ignore the chopper's turret, i don't think its good enough to kill you...well, at least it didn't kill me. anyway, move up to the structure and you will find a broken wall, look in there and there will be an A.I. waiting right there, shoot him and walk past the wall and turn left, another A.I., kill him. and after you walk past the inner broken wall, look up and there should be couple A.I.s coming after you. After you finish them up, just keep walking up the ramps and stairs until you make it up the top..then sniper should spawn and just laser target the bunker and you are done( i had to laser target the bunker twice for some reason)