President Donald Trump has congratulated Gen. Mark Milley (MIHL’-ee) on becoming chairman of the Joint Chief of Staff.

Trump is attending a rainy welcome ceremony for Milley at a military base in Arlington, Virginia. Trump says he’s always heard that rain on a big event brings luck and tells Milley, “Mark, I think you’re going to be the luckiest general in history.”

The role of the Joint Chiefs chairman is to advise the president, defense secretary and the National Security Council on military issues.

President Donald Trump participates in an Armed Forces welcome ceremony for the new chairman of the Joint Chiefs of Staff, Gen. Mark Milley, left, Monday, Sept. 30, 2019, at Joint Base Myer-Henderson Hall, Va. From left are Chairman of the Joint Chiefs of Staff, Gen. Mark Milley, Vice President Mike Pence, Trump and Secretary of Defense Mark Esper. (AP Photo/Evan Vucci)
President Donald Trump participates in an Armed Forces welcome ceremony for the new chairman of the Joint Chiefs of Staff, Gen. Mark Milley, left, Monday, Sept. 30, 2019, at Joint Base Myer-Henderson Hall, Va. From left are Chairman of the Joint Chiefs of Staff, Gen. Mark Milley, Vice President Mike Pence, Trump and Secretary of Defense Mark Esper. (AP Photo/Evan Vucci)

Trump also calls Milley his friend and adviser and says he “never had a doubt” about nominating Milley for the position.

Milley, formerly the Army chief of staff, succeeds Marine Gen. Joseph Dunford.

Trump chose Milley over a candidate favored by former Defense Secretary Jim Mattis.

President Donald Trump participates in an Armed Forces welcome ceremony for the new chairman of the Joint Chiefs of Staff, Gen. Mark Milley, left, Monday, Sept. 30, 2019, at Joint Base Myer-Henderson Hall, Va.  (AP Photo/Manuel Ceneta)
President Donald Trump participates in an Armed Forces welcome ceremony for the new chairman of the Joint Chiefs of Staff, Gen. Mark Milley, left, Monday, Sept. 30, 2019, at Joint Base Myer-Henderson Hall, Va. (AP Photo/Manuel Ceneta)
President Donald Trump participates in an Armed Forces welcome ceremony for the new chairman of the Joint Chiefs of Staff, Gen. Mark Milley, left, Monday, Sept. 30, 2019, at Joint Base Myer-Henderson Hall, Va. From left are Chairman of the Joint Chiefs of Staff, Gen. Mark Milley, Trump, Secretary of Defense Mark Esper and Gen. Joseph Dunford, former chairman. (AP Photo/Evan Vucci)
President Donald Trump participates in an Armed Forces welcome ceremony for the new chairman of the Joint Chiefs of Staff, Gen. Mark Milley, left, Monday, Sept. 30, 2019, at Joint Base Myer-Henderson Hall, Va. From left are Chairman of the Joint Chiefs of Staff, Gen. Mark Milley, Trump, Secretary of Defense Mark Esper and Gen. Joseph Dunford, former chairman. (AP Photo/Evan Vucci)

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