Spawn at command post 5 then jump on to the viaduct and jump off the end. Then there is a path on your left leading up towards command post 1 from there you can take the command post without fighting to many enemies.
Spawn as any unit. Then get on to a speeder and quickly drive up to the river in front of command post 1, from here choose to either drive over the bridge or preferably up the hill next to the waterfall. From the top jump off of your speeder and take the command post.
You may deploy as any trooper you like, but please don't use a Bothan Spy or Jet Trooper. Once you reach command post three, hide by the wall that is nearest the turret. If you do this step just right you should be able to secure command post three without getting hurt by the enmey auto defense grid turret. Note this strategy should only be used when the enemy has auto turrets bonus activated.
On Yavin 4 Temple, when the game starts, select the Republic and kill a lot of droids to unlock the Jet Trooper. Then respawn as the Jet Trooper and kill six droids woth your Commando Pistol to unlock the Precision Pistol. Fly up to a turret (Make sure to kill anybody in it) and land on it. Use your pistol to snipe any droids nearby. (Fly to the Turret of your choice)