Chelsea Manning is set to leave a military prison in Kansas on Wednesday after seven years behind bars that transformed her from a socially isolated Army private in Iraq into an international celebrity whose leaks inspired and enraged people around the world.

Near-term plans are unclear for the transparency advocate who gave WikiLeaks about 750,000 documents that exposed details about wars in Iraq and Afghanistan and jolted U.S. diplomacy by outing incendiary allegations about foreign officials.

Evan Greer, a leader of the advocacy group Fight for the Future who says she speaks about once a week with Manning, says “it’s really important right now that we protect Chelsea’s security and privacy."

A triumphant press conference is not planned at the gates of Fort Leavenworth, and basic information such as where she plans to live is not being disclosed.

It's a delicate time for Manning, 29, who was 22 years old when she was arrested, even without considering the outspoken hostility of President Donald Trump.

“It’s been very surreal for everyone involved,” Greer says. “The hours went by very slowly between finding out that Chelsea’s sentence was being commuted and tomorrow."

Manning was known publicly as Bradley before she was sentenced in 2013 to 35 years in prison, much longer than other recent leak sentences. In January, President Barack Obama used his clemency power to end the sentence early on May 17.

Chelsea Manning is pictured in prison photos published by the ACLU. (ACLU)

Days after receiving clemency, Manning said she may move to Maryland, but her attorney Nancy Hollander said in an email last week that “Chelsea will make these decisions after she gets out.”

Chase Strangio, an American Civil Liberties Union attorney who helped Manning win access to transgender-supportive medical treatment, says “in the long term she will move home to Maryland.” But immediate plans aren’t being widely circulated.

Strangio says "she has no plans for media appearances beyond a few pre-set exclusives."

Manning grew up in Oklahoma but lived with an aunt in suburban Maryland before joining the Army. While stationed in Iraq, she worked as an intelligence analyst and, growing disillusioned with the U.S. military mission, copied classified documents onto CDs and sent the files to WikiLeaks, which published most of the content after her arrest.

Separately, Manning gave the anti-secrecy site footage that she submitted online, including a video branded “Collateral Murder” by WikiLeaks that shows American Apache helicopters killing a group of Iraqis along with two Reuters employees. The video was published shortly before her arrest.

U.S. officials said the leaks put lives and sources of intelligence at risk, but Manning's supporters credit her with helping spark the pro-democracy Arab Spring protests and with illuminating an under-count of civilian deaths in Iraq, among other disclosures.

Daniel Ellsberg, the former military analyst who leaked the Pentagon Papers, is arrested at a 2011 rally in Quantico, Va., during a protest of the treatment of Chelsea Manning. (Robert A. Martin/The Free Lance-Star/AP)

"[E]verywhere there’s a U.S. post … there’s a diplomatic scandal that will be revealed," Manning wrote in a May 2010 online chat with Adrian Lamo, the former hacker who reported her to authorities. "God knows what happens now[,] hopefully worldwide discussion, debates and reforms."

Legal scholars say Trump likely cannot revoke Manning’s clemency. In January, the president called Manning an "ungrateful traitor" and in 2010 he suggested she face either life in prison or execution.

Greer says “we’re certainly living in times where we should expect the unexpected,” but says there would be an uproar if Manning is “harassed” by authorities.

Army spokeswoman Jennifer Johnson said in a Tuesday afternoon email that “it would be premature for us to speculate on a timeline” for Manning’s release on Wednesday.

Dave Foster, another spokesperson for the Army, says "Inmate Manning will be released from confinement in accordance with President Obama's order on 17 May,” but that “to ensure the privacy and security of Inmate Manning, no further information concerning the release will be provided.”

Though Manning was sentenced to receive a dishonorable discharge from the Army, Foster says Manning will continue to receive health care and other benefits provided by the military while her appeal is pending final resolution. She will be considered on leave and won’t be paid, he says.

One woman heckles President Barack Obama during a 2013 speech as another holds a sign reading "Free Bradley Manning." (Jacquelyn Martin/AP)

To support her transition out of prison, more than 3,000 contributors collectively donated about $140,000 on the web platform GoFundMe. Supportive musicians announced a benefit album on Tuesday.

Manning communicated regularly with the public from prison, with a column published by the Guardian and through a Twitter account that is managed by a supporter who speaks with her regularly on the phone and types down the messages.

Despite backing from a passionate base, prison was an unpleasant experience for Manning, who was at times held in solitary confinement and twice attempted suicide last year.

Strangio wrote in a Monday blog post that Manning plans to prioritize transgender issues after her release.

"The first thing Chelsea always says when we talk about her freedom is that she wants to give back to the trans community – to fight for the many trans people, largely trans women of color, held in custody; to continue to connect with trans young people; to share our victories and our struggles; to continue to transform the public narrative about what it means to be trans," Strangio wrote.

Greer, who like Strangio is transgender, says she thinks Manning will focus on a variety of other issues, too.

"I can only imagine how she feels," Greer says in anticipation of the release. "I can’t focus on anything today.”