Former Trump chief of staff Reince Priebus officially joins Navy

Former White House chief of staff Reince PriebusReinhold (Reince) Richard PriebusMulvaney faces uncertain future after public gaffes Politicon announces lineup including Comey, Hannity, Priebus Sunday shows - White House stresses Trump's determination in China trade fight as GOP challenger emerges 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 JohnsonSunday shows — New impeachment phase dominates Rand Paul says Trump has 'every right' to withhold Ukraine aid over corruption Johnson dismisses testimony from White House officials contradicting Trump as 'just their impression' MORE (R-Wis.) tweeted.

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

Sean SpicerSean Michael Spicer'Queer Eye' star Karamo Brown says his family has gotten death threats over his Sean Spicer support 'Dancing with the Stars' judges to Spicer: 'We keep throwing you out the boat' but viewers throw 'you a life preserver' Dog who chased ISIS leader gets press conference on 'SNL' 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 MattisFormer Mattis staffer: Trump 'shooting himself in the foot' on foreign policy Former staffer hits back at Mattis's office over criticism of tell-all book Former speechwriter for General James Mattis: Has the national security state grappled with Donald Trump? 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 TrumpThis week: House kicks off public phase of impeachment inquiry Impeachment week: Trump probe hits crucial point Judd Gregg: The big, big and bigger problem 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.