The Star Wars Battlefront Turning Point game mode is all about capturing the points from the Imperial forces, and making sure you have time on your side. When the game begins as a Rebel you have 5 minutes to capture one of the three available points on the map, as you capture, more time is added to the game clock. If you don’t capture any points in the 5 minutes you are given then the Rebels will lose, and Galactic Empire will triumph.
If you are successful in capturing one of the three points you will then be given an additional three points to capture that will slowly move you towards the other side of the map. Once you get to the other side of the map, you will be left with just one capture point to take in order to win the game.
Also as you capture points your progress in that capture are saved. If you have taken about 25% of a certain capture point, and then are killed, the progress is kept so your team can keep pounding that capture point. That 25% progress that you have made will not start to retrace, and it will not be lost.
If you would like to discuss this game mode, please visit the Battlefront Game Modes forum.