Play as the Empire or Republic and capture the Cantina and the ship command post(numbers 4 and 5). Then advance to the Rebels/CIS final command post(number 6). Look in the back left corner of the command post. There will be 5-10 Rebels/Droids gathered there. Throw a grenade to quickly increase your kill and point count, while decreasing their reinforcement count. In some mods, it is very useful to also use orbital strike, as the barrage will also kill newly respawned troops.