In a biography released over the weekend, a former member of the U.S. Navy SEALs comes out transgender.

In Warrior Princess, 46-year-old Kristin Beck, formerly Chris, who served 20 years as a SEAL, reveals that after she left the service she decided to begin living the life she was meant to live.

“Chris really wanted to be a girl and felt that she was a girl and consolidated that identity very early on in childhood,” Anne Speckhard, co-author of the biography, told ABC News.

“For years Chris had turned off his sexuality like a light switch and lived as a warrior,” the book reads, “consumed with the battle – living basically asexual. For Chris the other SEALs were brothers and in the man's man warrior lifestyle, even if he had wanted to entertain sexual thoughts, there really was never any time to be thinking too much about sexuality.”

The time seemed right after her retirement in 2011.

“Now seemed the right time to go for it – to make his body match his identity – or at least start by dressing like a woman in his regular life.”

Speckhard said that Beck is currently on hormone therapy and preparing for sex-reassignment surgery.

Transgender men and women are currently not allowed to serve openly in the military.