Nancy Haque, a co-executive director for Basic Rights Oregon, called the ruling a "momentous day for genderqueer Oregonians."

"It's really exciting for the courts to actually recognize what we know to be true: gender is a spectrum," Haque said. "Some people don't identify as male or female."

Shupe, an Army veteran who retired in 2000 a sergeant first class, began transitioning in 2013 while living in Pittsburg. Shupe knew then that neither male nor female fit. Shupe chose "Jamie" as a new first name primarily because it is a gender-neutral name. Shupe prefers to be called "Jamie," rather than by a pronoun.

"I was assigned male at birth due to biology," Shupe said. "I'm stuck with that for life. My gender identity is definitely feminine. My gender identity has never been male, but I feel like I have to own up to my male biology. Being non-binary allows me to do that. I'm a mixture of both. I consider myself as a third sex."