Command and Conquer 3 Walkthrough GDI Mission 3B, Langley Air Force Base

Taking Langley Air Force Base will give you control of air units, as the last mission gave you control of APCs. Your task as usual is to eliminate the NOD presence in the area, along with some bonus objectives. This missions starts out in cool, traditional CNC style, letting you take out a small army of infantry with some grenadiers to take control of the base. Don't forget the rocket infantry firing from the building to the north!

Set your forces to guard the area, placing them on the northwestern side of your base. You will want to start producing APCs and various infantry immediately to begin your assault. APCs loaded with rocket infantry are highly recommended as the Enemy has both Venom fighters and good infantry defense in their base, in the form of shredder turrets. Still, it's wise not to skimp on grenadiers as the brotherhood has set up garrisons in the city. I honestly don't care much for pitbulls, but they are good in this case in the role of anti-air base defense in that the Venoms you are facing have anti-infantry weapons. Save the APCs for your assault.

Take 4 APCs, 2 with riflemen and 2 with grenadiers, to the southwest, while you build up a small army (8 or so) of APCs with a variety of infantry. The force moving SW should move cautiously as there are terrorists that need to be mowed down before they can make contact with your APCs. Use the grenadier forces to clear the buildings, and push further to find the snipers. Take an engineer to capture the tiberium refinery for good measure, leaving the 4 apcs to guard it.

Once you've got an army, head to the northwest of your base through the opening, taking out the shredder turret by the node which connects all 3 of the guns (you could use bombardment) to avoid them re-building themselves. Kill the NOD in your way as you make your way to the airfields. When you've cleared the guards, you'll gain control.

Now, with the might of the GDI air force on your side, you can pretty much pummel the four targets in the NW corner of the map. Use your surviving APCs to guard against the now-agitated NOD forces. It shouldn't take but a few bombing runs to complete the mission if you ignore everything but your objectives. Use the time between to gather any stray snipers.