Former Trump chief of staff Reince Priebus officially joins Navy

Former White House chief of staff Reince PriebusReinhold (Reince) Richard PriebusOvernight Defense: Inside the 3B House defense policy bill | Senators take new tack to challenge Saudi arms sales | Raytheon, United Technologies to merge Overnight Defense: Inside the 3B House defense policy bill | Senators take new tack to challenge Saudi arms sales | Raytheon, United Technologies to merge Former Trump chief of staff Reince Priebus officially joins Navy 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 JohnsonHillicon Valley: Lawmakers angered over Border Patrol breach | Senate Dems press FBI over Russian hacking response | Emails reportedly show Zuckerberg knew of Facebook's privacy issues | FCC looks to improve broadband mapping Hillicon Valley: Lawmakers angered over Border Patrol breach | Senate Dems press FBI over Russian hacking response | Emails reportedly show Zuckerberg knew of Facebook's privacy issues | FCC looks to improve broadband mapping Lawmakers demand answers on Border Patrol data breach MORE (R-Wis.) tweeted.

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

Sean SpicerSean Michael SpicerWhat President Trump needs in his next press secretary  Five memorable moments from Sarah Sanders at the White House Five memorable moments from Sarah Sanders at the White House 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 MattisTop nuclear official quietly left Pentagon in April Top nuclear official quietly left Pentagon in April Overnight Defense: Pompeo blames Iran for oil tanker attacks | House panel approves 3B defense bill | Trump shares designs for red, white and blue Air Force One 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 TrumpTrump says 'Failing New York Times' should be held 'fully accountable' over Russia report Trump says 'Failing New York Times' should be held 'fully accountable' over Russia report Trump tweets ICE will begin removing 'millions' of undocumented migrants 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.