defected

verb
  1. 1

    To abandon or turn against; to cease or change one's loyalty, especially from a military organisation or political party.

  2. 2

    To desert one's army, to flee from combat.

  3. 3

    To join the enemy army.

  4. 4

    To flee one's country and seek asylum.

Source: https://en.wiktionary.org/wiki/defect, https://en.wiktionary.org/wiki/defected