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U.S. Secretary for Defense, Jim Mattis, sits opposite Britain's Secretary of State for Defence, Gavin Williamson, before a meeting at the Ministry of Defence (MoD) in central London, Britain November 10, 2017. REUTERS/Simon Dawson - RC1A8163C750

Outgoing defense secretary Mattis urges employees to ‘hold fast’

WASHINGTON — On his final day as secretary of defense, Jim Mattis on Monday urged all Pentagon employees, military and civilian, to “hold fast” in defense of the country.

Mattis, who submitted his resignation on Dec. 20 and was in effect fired by President Donald Trump three days later, was working in the Pentagon on Monday and preparing to hand off his duties at midnight to Deputy Secretary Patrick Shanahan. Trump picked Shanahan, a former Boeing Co. executive with no previous government or military experience, to serve as acting defense secretary, pending a decision on who would be nominated to serve in a more permanent capacity.

READ MORE: Mattis is leaving. What does that mean for Trump?

In a written farewell message, Mattis quoted a one-sentence telegram that President Abraham Lincoln sent to the commander of Union forces, Gen. Ulysses S. Grant, on Feb. 1, 1865, in the final weeks of the Civil War. It said: “Let nothing which is transpiring, change, hinder, or delay your military movements, or plans.”

Mattis, who resigned over a series of policy disagreements with Trump, including the president’s decision to withdraw U.S. troops from Syria, said he’s confident Pentagon employees will remain “undistracted from our sworn mission to support and defend the Constitution while protecting our way of life.”

“Our Department is proven to be at its best when the times are most difficult,” he wrote. “So keep the faith in our country and hold fast, alongside our allies, aligned against our foes.”

Mattis is the first retired military general to serve as defense secretary since George Marshall in the early 1950s.

READ MORE: ‘Fix-it’ man Shanahan, Mattis’ successor, working to streamline defense spending

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