Former Trump chief of staff Reince Priebus officially joins Navy

Former White House chief of staff Reince PriebusReinhold (Reince) Richard PriebusTrump blasts Scaramucci as 'incapable' Trump taps Sean Spicer to join Naval Academy board of visitors Trump's no racist — he's an equal opportunity offender MORE on Monday officially joined the U.S. Navy following a commissioning ceremony led by Vice President Pence.

Priebus, 47, was commissioned as an ensign, the junior rank in the Navy, following a months-long application process. Several lawmakers and fellow Wisconsinites attended the ceremony and shared photos after its conclusion.

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"It was an honor and privilege to attend @Reince’s naval commissioning ceremony this morning. Congratulations and thank you for your service Ensign Priebus!!!" Sen. Ron JohnsonRonald (Ron) Harold JohnsonThe road not taken: Another FBI failure involving the Clintons surfaces GOP senator: Gun control debate 'hasn't changed much at all' back home GOP senators call for Barr to release full results of Epstein investigation MORE (R-Wis.) tweeted.

Rep. Bryan Steil (R-Wis.) also attended.

Sean SpicerSean Michael SpicerConservatives lash out at CNN for hiring Andrew McCabe 'Queer Eye' star blasts 'Dancing with the Stars' for including Sean Spicer Trump says Spicer will 'do great' on 'Dancing with the Stars' MORE, a Navy reserve officer and the White House press secretary during Priebus's tenure in the administration, also attended and offered his congratulations on Twitter.

The Navy did not immediately respond to a request for comment about Priebus's swearing in, but the longtime political insider is expected to serve as a human resources officer.

The Washington Post first reported in December that Priebus had applied to join the Navy as a reserve officer. He underwent a months-long process that included a recommendation from then-Defense Secretary James MattisJames Norman MattisOnly Donald Trump has a policy for Afghanistan New Pentagon report blames Trump troop withdrawal for ISIS surge in Iraq and Syria Mattis returns to board of General Dynamics MORE.

Priebus wrote in his application statement, which was obtained by the Post, that he was moved to serve following an Oval Office meeting in which President TrumpDonald John TrumpDavid Axelrod after Ginsburg cancer treatment: Supreme Court vacancy could 'tear this country apart' EU says it will 'respond in kind' if US slaps tariffs on France Ginsburg again leaves Supreme Court with an uncertain future MORE met with the wife and children of a slain Navy SEAL.

He previously served as the chairman of the Republican National Committee and was Trump's first chief of staff.