Kirsten Beck has published an eBook recounting her inner turmoil while she served in the all-male SEAL Team 6, which she retired from months before the unit killed Al-Qaeda leader Osama bin Laden at his Pakistan hideout in 2011.
Beck's book comes more than two years since Congress repealed a ban on openly homosexual troops serving in the American military. But openly transgender men and women are still barred from service and activists hope the memoir could help lift the prohibition.
To Beck's surprise, former comrades have sent in messages of support and encouragement.
"Brother, I am with you ... Being a SEAL is hard, this looks harder. Peace," one commando reportedly wrote her.
Other Navy SEALs, including some involved in the Bin Laden raid, have written memoirs under pseudonyms describing dramatic battles along with anecdotes of camaraderie and frustration with Washington's bureaucracy.
"I am now taking off all my disguises and letting the world know my true identity as a woman," Beck wrote on the LinkedIn social media site, after changing the name on her profile page to Kristen from Chris.
Beck co-authored the memoir with Anne Speckhard, an adjunct associate professor of psychiatry at Georgetown University Medical School, who said the ex-commando fought to suppress his angst over gender for years.
"After multiple combat deployments -- more than many SEALs ever encounter, Chris returned back alive to fight this deeper battle in his soul and grappled with the moral and social decisions of living in secret or to transition into her true self.
