Destroying Control Towers
One good way to destroy airfield control towers in 'operation flaming dart' is to be a type of unit that has access to a controlled explosive like the c-4. go to the enemy tower and go prone using the sand bags for protection. place as many explosives on the towers sandbags (from the inside) and when you see them start to disappear run away detonate the explosives and repeat. use the ammo crate under the towers to use as many explosives as you want.
Kicking US helicopter ass
When playing on a map were the Americans have a helicopter and you are a Vietcong, always select a RPG and get a friend to come a long with an automatic weapon. Find a helicopter (huey if possible) stay low and in the foliage hold yojur fire until our aiming at the rear of it near the tale rotor and fire, the missile should bring down the chopper, if anyone survives the crash get your friend to finish them off with some machine gun fire, and help yourself to the spoils that are in the chopper!
Huey cargo trick
First, go to the single player menu, and pick the first battle on the instant action screen. be the Americans! when the level begins, grab 1 of the huey choppers, and lower the cargo cable. grab a patrol boat with the cable. now, get some altitude and speed down the river. once you get enough speed, release the boat. immediately after dropping the boat, eject from the chopper and quickly throw out the parachute. you should land right in the boat. this way lets you easily reach the enemy's last spawn and take it...plus, it looks so damn cool!
(Also works with an MI8) Have another player get into a huey or MI8 and take off and hover over the helipad. Get directly under the helicopter and crouch. Then have the pilot come back down on you (This may hurt unless friendly fire is turned off). It might take a couple of tries but if done correctly, you should be inside the helicopter. You can now hide inside and kill any enemies that enter or use it as a better air support battery.
Chinook lands on water
The Chinook can land on water
An easy way to drop the logs on the traps without being in an easy to spot and shoot position, is to put some C4 or other controlled explosive and detonate it from a safe position.
Disable Opposing Airforce
On Operation Flaming Dart the most important thing to is to make the other team have no way of transport. You must do the following: Be NVA, choose the engineer with the mortar, fly over to the US base in a plane or chopper. Find one of their ATC towers (there are three, one for airplanes, one for boats and one for choppers) shoot the tower you choose a few times then bail out. Pull out your mortar and let the tower have it. You should be able to take out the tower with just your mortar. Then booby trap all the vehicles you can and step back for some entertainment!