Armageddon Sapphire universe

In an alternative universe created by the Quantum Archangel, the Time Lords fought the Daleks in the War. The Master joined the Time Lords in the fight, however, he began aiding the Daleks by giving them temporal manipulation technology. The Sixth Doctor, who was Lord President Admiral of Gallifrey, activated the Armageddon Sapphire and destroyed the universe rather than letting the Enemy win. (PROSE: The Quantum Archangel)