"The President must ask himself which side of history he will be on — and reverse his position immediately," Jenner wrote.

Caitlyn Jenner Says Her 'Allegiance Is Not' with Donald Trump After 'Half-Baked' Transgender Military Ban

Looks like Caitlyn Jenner has finally realized who Donald Trump really is.

The reality star, a longtime Republican who supported Trump in his presidential campaign, spoke out against his ban on transgender individuals serving in the military, which was announced on Wednesday.

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“I believe every American should be outraged by the disrespect shown to those people wearing our country’s uniform. Furthermore, this half-baked idea puts all of our service members in harm’s way,” the I Am Cait star wrote on her website. “Does President Trump intend to just pull 15,000 people out of every critical position to which they are currently assigned? That would disrupt core military missions around the world and needlessly endanger our troops.”

In addition to providing more statistics and facts, Jenner, who is considering a Senate run in California, also stated that “19 other countries have successfully integrated trans service members without any problems,” citing Wikipedia.

“Over the past two years I have met the most inspiring trans people, and I can testify to the trans community’s incredible resilience and perseverance in the face of enormous discrimination and hate,” Jenner continued. “We are strong, we are beautiful, and we will win. The President must ask himself which side of history he will be on — and reverse his position immediately.”

Concluding, “America’s 15,000 trans service members and 134,000 veterans are much braver than you, Mr. Trump; my allegiance is with them and our country, not you.”

RELATED VIDEO: Caitlyn Jenner Speaks Out on Donald Trump’s Transgender Bathroom Rollback: ‘This Is a Disaster’

President Trump tweeted that transgender people will not be able to serve in the military “in any capacity,” reversing a policy enacted last year under President Barack Obama that allowed them to serve openly. He cited “tremendous medical costs” for transgender service members as a burden on the U.S. military.

Jenner previously told PEOPLE that she felt those who focus on her GOP affiliation are missing the point.

“Here’s the deal: yes, I have always had views that lean more towards the Republican party when it comes to politics (as in) less government, believing in the Constitution and all that kind of stuff,” she said. “But my loyalties and my fights are not going to be with the Republican party. My loyalties are with my community and fighting for my community.”