1. Go to a battlefield objective (the shields on the map) or one of the keeps.
2. Queue up for a scenario and enter.
3. Once youve finished the scenario and/or left it you will spawn at the warcamp instead of the keep/battlefield objective where you entered.
Its nothing extreme but itll save you a good few minutes of travelling time.
As long as you enter while within an objective/keep you can queue before youve arrived to one.