Bradley Manning's letter, entitled The Next Stage of My Life, was signed with a handwritten signature in the name of Chelsea Manning.
The letter was broadcast on NBC's Today show as Manning's lawyer revealed the soldier's desire to live life as a woman.
More top news
The brother of a taxi driver killed alongside the Afghan Taliban leader has asked police to investigate his sibling's death.
The girl's injuries are not thought to be life-threatening.
A dry night ahead, with any showers fading away.