Spawn in at Command Post 2 as a Heavy Assault trooper unit. Then take the left road towards CP3, then proceed to capture it. Move along and destroy the enemy Particle Turrets with your Rocket Launcher. Once the enemy turrets have been destroyed, head up towards the bridge and secure CP5. Once CP5 has been converted, change to a Clone Trooper or a Rebel Soldier. Then charge back down the bridge to secure CP4. The CIS or Empire will have most likely taken CP2 by this time. Just head down to CP2 and vanquish the remaining enemies.