On the very first day when John Kelly was sworn in as the White House's chief of staff, Anthony Scaramucci was removed as communications director after an 11-day controversy-laden tenure amid high-profile shake-ups in a chaotic West Wing.

A DOSE OF MILITARY DISCIPLINE

U.S. President Donald Trump swore in Kelly as his new chief of staff on Monday -- two days after he announced that the retired four-star Marine Corps general would take helm of the White House.

At the swearing-in ceremony in the Oval office, Trump praised the 67-year-old Kelly for what he described a "record-shattering" performance in heading the Department of Homeland Security (DHS).

Kelly had served as secretary of homeland security since late January when his hard-line attitude against illegal immigration and execution of a controversial travel ban signed by Trump on several Muslim countries were repeatedly praised by the president.

Known for a fastidious character, Kelly is tasked with bringing order to an unregimented White House, which, as Republicans on Capitol Hill see, has led to few legislative progress and a loss of public support.

While congratulating Kelly on "a fantastic job" serving the DHS, Trump voiced an expectation of a "better job" from the former U.S. Southern Command leader.

FULL AUTHORITY

Only hours after Kelly was sworn in, Scaramucci was removed from his role as White House communications director, less than two weeks after he was brought onto the West Wing staff by Trump amid wide objections.

Sean Spicer resigned as press secretary to protest the appointment of Scaramucci, while Reince Priebus, Kelly's predecessor, left the White House after Scaramucci, the former Wall Street financier, accused him of leaking damaging information to reporters.

Scaramucci embroiled himself in deeper controversies by unleashing a vulgar tirade against other senior White House aides including Kelly and Trump's chief strategist Steve Bannon in a New Yorker magazine interview.

Confirming his departure in a statement Monday afternoon, the White House said Scaramucci "felt it was best to give chief of staff John Kelly a clean slate and the ability to build his own team."

White House Press Secretary Sarah Huckabee Sanders said that Trump believes that Scaramucci's off-color remarks were "inappropriate."

Kelly will have "full authority" to bring "new structure, discipline and strength to the White House," said Sanders, adding that "all staff will report to him."

SHAKE-UPS IN CHAOS

Sanders said Scaramucci "does not have a role at this time in the Trump administration," making him the second assistant to step down after less than a month of service in Trump six-month administration.

Michael Flynn, former national security adviser, resigned in February after a brief 24-day tenure following revelations that he secretly spoke with a Russian ambassador during the 2016 presidential election.

Investigators are looking into allegations of a Russian meddling in the election and possible links between the Russian government and the Trump campaign, which has reached his inner circles, including his eldest son and son-in-law, in the lasting political storm.

Scaramucci is also the fourth high-profile departure from Trump's turbulent administration after Flynn, Spicer and Priebus.

An establishment Republican, former chief of staff Priebus was replaced after Trump lost faith in his ability to keep the chaotic White House in order and advance the GOP legislative agenda which was delayed once again by failed attempts to repeal and replace the healthcare system.

Corey Lewandowski, Trump's former campaign manager, told the press that he took Kelly's hiring as evidence that Trump wanted to move forward his stalled political agenda.